NY: Individual County Chronologies

John H. Long, Editor; Peggy Tuck Sinko, Associate Editor; Kathryn Ford Thorne, Historical Compiler; Douglas Knox, Book Digitizing Director; Emily Kelley, Research Associate; Laura Rico-Beck, GIS Specialist and Digital Compiler; Peter Siczewicz, ArcIMS Interactive Map Designer; Robert Will, Cartographic Assistant

ALBANY created from non-county area in New York; northern limit was not defined. (N.Y. Col. Laws, ch. 4/1:122)

ALBANY gained from DUTCHESS and Non-County Area 4. (N.Y. Col. Laws, ch. 333/1:915)

King George III, as part of his Proclamation of 1763, created the new province of Quebec in Canada, implicitly setting the northern limit of New York at the parallel of 45 degrees north latitude from the Atlantic-St. Lawrence watershed westward to the St. Lawrence River. ALBANY's northern limit was implicitly set at this new northern limit [not mapped]. (Cappon, Petchenik, and Long, 1, 77, 90; Shortt and Doughty, 119-120)

ALBANY implicitly gained all of present Vermont when King George III established the boundary between New York and New Hampshire along the west bank of the Connecticut River, north of Massachusetts [western limit not defined]. (Slade, 13-19; Van Zandt, 63)

ALBANY lost to creation of CUMBERLAND (extinct). (N.Y. Col. Laws, ch. 1297/4:904)

ALBANY gained all of CUMBERLAND; CUMBERLAND eliminated when the act that created it was annulled. (N.Y. Col. Laws, ch. 1297/4:903)

ALBANY lost to re-creation of CUMBERLAND (extinct). (N.Y. Col. Laws, ch. 1559/5:400)

ALBANY lost to creation of GLOUCESTER (extinct). (N.Y. Col. Laws, ch. 1559/5:401)

ALBANY lost to creation of CHARLOTTE (now WASHINGTON) and TRYON (now MONTGOMERY). (N.Y. Col. Laws, ch. 1534/5:321)

ALBANY lost to CUMBERLAND (extinct). (N.Y. Col. Laws, ch. 1559/5:402)

ALBANY lost to ULSTER. (N.Y. Col. Laws, ch. 1665/5:662)

ALBANY exchanged with CUMBERLAND (extinct), lost to CHARLOTTE (now WASHINGTON). (N.Y. Col. Laws, ch. 1719/5:779)

ALBANY lost territory when Vermont declared its independence from New York and became an independent republic; ALBANY eliminated from Vermont. (Slade, 70-73; Van Zandt, 64; C. Williamson, 82-84, map facing 95, 100-102, 112-113)

BENNINGTON (Vt.) overlapped part of ALBANY when Vermont attempted to annex part of New York (known as West Union). New York did not lose control of the area. (Vt. State Papers, 13:45-46)

BENNINGTON (Vt.) overlap of ALBANY ended when Vermont gave up its attempt to annex the West Union. (Vt. State Papers, vol. 3, pt. 2, pp. 67-68)

ALBANY lost to creation of COLUMBIA. (N.Y. Laws 1786, 9th sess., ch. 28/p. 49)

New York, refusing to recognize the independence of Vermont and the elimination of CUMBERLAND (extinct) in 1777, attempted unsuccessfully to adjust the former boundary between ALBANY and CUMBERLAND (extinct) in Vermont, but to no effect. (N.Y. Laws 1788, 11th sess., ch. 63/pp. 746-747)

ALBANY lost to WASHINGTON and to creation of RENSSELAER and SARATOGA. (N.Y. Laws 1791, 14th sess., ch. 4/p. 201)

ALBANY lost to creation of SCHOHARIE. (N.Y. Laws 1795, 18th sess., ch. 42/p. 588)

ALBANY lost to ULSTER. (N.Y. Laws 1798, 21st sess., ch. 93/p. 273)

ALBANY lost to creation of GREENE. (N.Y. Laws 1800, 23d sess., ch. 59/p. 503)

ALBANY gained from SCHOHARIE. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

ALBANY lost to creation of SCHENECTADY. (N.Y. Laws 1808, 32d sess., ch. 65, sec. 1/p. 458)

ALBANY lost Havre Island to SARATOGA [change too small to display on interactive map; shapefile users see small_changes 1888_pt. for location]. (N.Y. Laws 1888, 111th sess., ch. 42/p. 85)

ALLEGANY created from GENESEE. (N.Y. Laws 1806, 29th sess., ch. 162, sec. 1/p. 604)

ALLEGANY gained from STEUBEN, lost to GENESEE, and lost to creation of CATTARAUGUS and NIAGARA. (N.Y. Laws 1808, 31st sess., ch. 38/p. 263; ch. 40, secs. 1-2/p. 266)

Legislature authorized CATTARAUGUS to be attached to ALLEGANY, but attachment did not take effect. (N.Y. Laws 1812, 35th sess., ch. 173/p. 517)

Eastern half of CATTARAUGUS was detached from NIAGARA, attached to ALLEGANY for administrative and judicial purposes. (N.Y. Laws 1814, 37th sess., ch. 123/p. 146)

CATTARAUGUS fully organized, detached from ALLEGANY. (N.Y. Laws 1816, 40th sess., ch. 115, sec. 1/p. 107)

ALLEGANY lost to WYOMING. (N.Y. Laws 1846, 69th sess., ch. 51/p. 53)

ALLEGANY lost to LIVINGSTON. (N.Y. Laws 1846, 69th sess., ch. 197, sec. 1/p. 235)

ALLEGANY lost to LIVINGSTON. (N.Y. Laws 1857, 80th sess., ch. 166/p. 366)

BENNINGTON (Vt.) overlapped part of ALBANY when Vermont attempted to annex part of New York (known as West Union). New York did not lose control of the area. (Vt. State Papers, 13:45-46)

BENNINGTON (Vt.) overlap of ALBANY ended when Vermont gave up its attempt to annex the West Union. (Vt. State Papers, 3, pt. 2: 67-68)

[7 March 1682/1683] BERGEN (N.J.) created as one of four original counties in East New Jersey; BERGEN included part of New York. (Shaw, 1:212, 231; Snyder, 10-11, 29-31; Wall and Pickersgill, 1:63)

[21 January 1709/1710] BERGEN (N.J.) gained from ESSEX (N.J.). (Snyder, 30)

BERGEN (N.J.) lost to ORANGE when King George III approved the boundary between New York and New Jersey, as determined by a commission appointed in 1769 at the joint request of the two colonies after decades of dispute; BERGEN (N.J.) eliminated from New York. (Pratt, 2:789; Snyder, 13-14; Van Zandt, 76)

BERKSHIRE (Mass.) created from HAMPSHIRE (Mass.). BERKSHIRE included a small area in present New York (Boston Corner) that had previously been part of HAMPSHIRE (Mass.). (Mass. Col. Acts, vol. 4, ch. 33 [1760-1761], sec. 1/p. 432)

BERKSHIRE (Mass.) lost to HAMPSHIRE (Mass.) when town of Worthington was created from Plantation #3. Area within present New York was unchanged. (Mass. Col. Acts, vol. 4, ch. 16 [1768], sec. 1/p. 1028)

BERKSHIRE (Mass.) lost to HAMPSHIRE (Mass.) when town of Cummington was created from Plantation #5. Area within present New York was unchanged. (Mass. Col. Acts, vol. 5, ch. 6 [1779-1780], sec. 1/pp. 1072-1073)

BERKSHIRE (Mass.) lost to HAMPSHIRE (Mass.) when town of Middlefield was created from Worthington, Chester, Partridgefield (now Peru), Becket, Washington, and Prescott's Grant (now Middlefield). Area within present New York was unchanged. (Mass. Acts 1783, ch. 19, sec. 1/p. 228)

BERKSHIRE (Mass.) lost to HAMPSHIRE (Mass.) when town of Rowe was created from the Myrifield Grant and non-town territory. Area within present New York was unchanged. (Mass. Acts 1785, ch. 2, sec. 1/p. 230)

BERKSHIRE (Mass.) lost to HAMPSHIRE (Mass.) when town of Hawley gained from non-town area called Plantation #7. Area within present New York was unchanged. (Mass. Acts 1793, ch. 18, sec. 1/p. 242)

BERKSHIRE (Mass.) lost to FRANKLIN (Mass.) when town of Monroe was created from town of Rowe and non-town area called the Gore. Area within present New York was unchanged. (Mass. Acts 1822, ch. 93, sec. 1/p. 707)

BERKSHIRE (Mass.) lost to FRANKLIN (Mass.) when towns of Charlemont and Rowe gained from town of Zoar. Area within present New York was unchanged. (Mass. Acts 1838, ch. 56, sec. 1/p. 344 and ch. 57, sec. 1/p. 345)

BERKSHIRE (Mass.) boundary with HAMPDEN (Mass.) was clarified when the line between the towns of Sandisfield and Tolland was clarified [no change]. (Mass. Acts 1853, ch. 293/p. 535)

BERKSHIRE (Mass.) lost to COLUMBIA when New York acquired the southwestern corner of Massachusetts (Boston Corner); BERKSHIRE eliminated from New York. (Pratt, 2:223; Van Zandt, 70, 76)

BRONX created from NEW YORK. (N.Y. Laws 1912, 135th sess., ch. 548, sec. 1/p. 1352)

BRONX gained small area from WESTCHESTER. (N.Y. Laws 1917, 140th sess., ch. 664, sec. 1/p. 2022)

Boundary between BRONX and WESTCHESTER was redefined [no discernible change]. (N.Y. Laws 1950, 173d sess., ch. 650/p. 1508)

BRONX gained South Brother Island from QUEENS. (N.Y. Laws 1964, 187th sess., ch. 578/p. 1606)

BROOME created from TIOGA. (N.Y. Laws 1806, 29th sess., ch. 89/p. 431)

BROOME lost to CORTLAND. (N.Y. Laws 1814, 38th sess., ch. 198/p. 200)

BROOME lost small area to creation of TOMPKINS. (N.Y. Laws 1816, 40th sess., ch. 189, sec. 1/p. 197)

BROOME lost to TIOGA. (N.Y. Laws 1822, 45th sess., ch. 75, sec. 1/p. 76)

CATTARAUGUS created from ALLEGANY and GENESEE; CATTARAUGUS not fully organized, attached to NIAGARA for administrative and judicial purposes. (N.Y. Laws 1808, 31st sess., ch. 40, secs. 1-2/p. 266)

Legislature authorized CATTARAUGUS to be attached to ALLEGANY, but attachment did not take effect. (N.Y. Laws 1812, 35th sess., ch. 173/p. 517)

Eastern half of CATTARAUGUS was detached from NIAGARA, attached to ALLEGANY for administrative and judicial purposes. (N.Y. Laws 1814, 37th sess., ch. 123/p. 146)

CATTARAUGUS fully organized, detached from ALLEGANY and NIAGARA. (N.Y. Laws 1816, 40th sess., ch. 115, sec. 1/p. 107)

CAYUGA created from ONONDAGA. (N.Y. Laws 1798-1799, 22d sess., ch. 26/p. 333)

CAYUGA exchanged with ONTARIO, lost to STEUBEN. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

CAYUGA lost to ONTARIO and STEUBEN, and lost to creation of SENECA. (N.Y. Laws 1804, 27th sess., ch. 31/p. 112)

CAYUGA lost to creation of TOMPKINS. (N.Y. Laws 1816, 40th sess., ch. 189, sec. 1/p. 197)

CAYUGA exchanged small areas with ONONDAGA. (N.Y. Rev. Stat., 3:14-15)

CHAUTAUQUA created from GENESEE; CHAUTAUQUA not fully organized, attached to NIAGARA for administrative and judicial purposes. (N.Y. Laws 1808, 31st sess., ch. 40, secs. 1-2/p. 266)

CHAUTAUQUA fully organized, detached from NIAGARA. (Doty et al, 1:360)

CHEMUNG created from TIOGA. (N.Y. Laws 1836, 59th sess., ch. 77, sec. 1/p. 102)

CHEMUNG lost to creation of SCHUYLER. (N.Y. Laws 1854, 77th sess., ch. 386, secs. 1-4, 6/pp. 913-915)

CHENANGO created from HERKIMER and TIOGA. (N.Y. Laws 1798, 21st sess., ch. 31/p. 170)

CHENANGO lost to ONEIDA. (N.Y. Laws 1804, 27th sess., ch. 50/p. 172)

CHENANGO lost to creation of MADISON. (N.Y. Laws 1806, 29th sess., ch. 70, sec. 1/p. 398)

CLINTON created from WASHINGTON. (N.Y. Laws 1788, 11th sess., ch. 63/pp. 746-747)

CLINTON lost to creation of ESSEX. (N.Y. Laws 1798-1799, 22d sess., ch. 24/p. 332)

CLINTON gained from HERKIMER, MONTGOMERY, and ONEIDA. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

CLINTON lost to creation of ST. LAWRENCE. (N.Y. Laws 1802, 25th sess., ch. 16/p. 24)

CLINTON lost to creation of FRANKLIN. (N.Y. Laws 1808, 31st sess., ch. 43/p. 272)

CLINTON gained from ESSEX. (N.Y. Laws 1822, 45th sess., ch. 92/p. 94)

COLUMBIA created from ALBANY. (N.Y. Laws 1786, 9th sess., ch. 28/p. 49)

COLUMBIA gained small area from DUTCHESS. (N.Y. Laws 1798-1799, 22d sess., ch. 37/p. 347)

COLUMBIA lost small area to GREENE. (N.Y. Laws 1823, 46th sess., ch. 251/p. 377)

COLUMBIA gained from BERKSHIRE (Mass.) when New York acquired the southwestern corner of Massachusetts (Boston Corner). (Pratt, 2:223; Van Zandt, 70, 76)

CORNWALL (extinct) created by New York to cover all of the Duke of York's grant between the Kennebec and St. Croix Rivers in present Maine and Quebec, Canada. (Williamson, W.D., 1:421)

Massachusetts, relying on a new survey of its northern limit and responding to the Dutch capture of New York in August 1673, claimed some of the Duke of York's grant east of the Kennebec River in present Maine (including the Pemaquid settlement) and created an unnamed county that on 27 May 1675 was named DEVONSHIRE (Mass., extinct). This unnamed county overlapped part of CORNWALL (extinct), but the Duke of York did not recognize the Massachusetts claim. (Mass. Recs., 5:16; Reid, Maine, 138; Williamson, W.D., 1:443)

CORNWALL (extinct) was apparently eliminated when war broke out between the Abnaki Indians and the English in present Maine. (Williamson, W.D., 1:446)

New York re-created CORNWALL (extinct) to cover all of the Duke of York's grant in present Maine and Quebec, including the Pemaquid settlement governed since 1674 by Massachusetts. (N.Y. Col. Laws, ch. 4/1:122)

CORNWALL was eliminated when the area was incorporated into the Dominion of New England, a new province into which New York, New Jersey, and the New England colonies eventually were consolidated. (Barnes, 69-70; N.H. Early Laws, 1:166, 171)

CORTLAND created from ONONDAGA. (N.Y. Laws 1808, 31st sess., ch. 194, sec. 1/p. 365)

CORTLAND gained from BROOME. (N.Y. Laws 1814, 38th sess., ch. 198/p. 200)

CUMBERLAND (extinct) created from ALBANY; CUMBERLAND was located entirely within present Vermont. (N.Y. Col. Laws, ch. 1297/4:904)

CUMBERLAND eliminated when the act creating it was annulled. (N.Y. Col. Laws, ch. 1297/4:903)

CUMBERLAND (extinct) re-created from ALBANY in present Vermont. Boundaries were slightly different from those CUMBERLAND originally had in 1766. (N.Y. Col. Laws, ch. 1559/5:400)

CUMBERLAND (extinct) gained from ALBANY and CHARLOTTE (now WASHINGTON), lost to GLOUCESTER (extinct). (N.Y. Col. Laws, ch. 1559/5:402)

CUMBERLAND (extinct) exchanged with ALBANY and CHARLOTTE (now WASHINGTON). (N.Y. Col. Laws, ch. 1719/5:779)

CUMBERLAND eliminated when Vermont declared its independence from New York and became an independent republic. (Slade, 70-73; Van Zandt, 64; C. Williamson, 82-84, map facing 95, 100-102, 112-113)

After completing their re-conquest of New York in August 1673, the Dutch created HOARKILL (later DEALE, now SUSSEX, Del.) in present Delaware [no inland limits were specified]. HOARKILL became dependent on New York in 1674. (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)

In the fall of 1674, the Dutch returned New York and the Delaware River settlements, including HOARKILL (later DEALE, now SUSSEX, Del.) to the Duke of York in accordance with the Treaty of Westminster (9 February 1673/1674). By 6 November 1674 HOARKILL was made dependent on New York, although Maryland also claimed the area. (Docs. of N.Y., 12:515; George, Nead, and McCamant, 454; Parry, 13:136)

The Duke of York's laws were extended from New York to the Delaware region; HOARKILL (later DEALE, now SUSSEX, Del.) was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563; Reed, 13)

HOARKILL (later DEALE, now SUSSEX, Del.) lost to creation of ST. JONES (now KENT, Del.). (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)

HOARKILL renamed DEALE (now SUSSEX, Del.). (Reed, 13; Turner, 54)

DEALE (now SUSSEX, Del.) eliminated from New York when the Duke of York transferred present Delaware to William Penn. (Pa. Arch., 2d ser., 5:739-744)

DELAWARE created from OTSEGO and ULSTER. (N.Y. Laws 1797, 20th sess., ch. 33/p. 39)

DELAWARE gained from ULSTER, lost to GREENE. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

DELAWARE lost small area to ULSTER. (N.Y. Laws 1812, 35th sess., ch. 88/p. 427)

DELAWARE gained from OTSEGO. (N.Y. Laws 1816, 40th sess., ch. 140/p. 146)

DELAWARE lost to OTSEGO. (N.Y. Laws 1822, 45th sess., ch. 210/p. 206)

Massachusetts claimed some of the Duke of York's territory in present Maine and created DEVONSHIRE (Mass., extinct). County was unnamed until 27 May 1674. DEVONSHIRE overlapped part of CORNWALL, but the Duke of York did not recognize the Massachusetts claim. (Mass. Recs., 5:16; Reid, Maine, 138; Williamson, W.D., 1:443)

DEVONSHIRE (Mass., extinct) was apparently eliminated when war broke out between the Abnaki Indians and the English in present Maine. (Williamson, W.D., 1:446)

DUKES (extinct) created to cover the 1674 grant to the Duke of York of islands in Massachusetts, including Martha's Vineyard, Nantucket, and Elizabeth Islands. (N.Y. Col. Laws, ch. 4/1:122)

The province of Massachusetts Bay gained all of DUKES (the islands of Nantucket, Elizabeth, and Martha's Vineyard) when King William III and Queen Mary II issued a new charter for Massachusetts Bay and enlarged its jurisdiction to encompass territory that had been part of New York; DUKES eliminated. (Swindler, 5:80)

DUTCHESS created from non-county area in New York. (N.Y. Col. Laws, ch. 4/1:122)

DUTCHESS lost to creation of Non-County Area 4. (N.Y. Col. Laws, ch. 17/1:268)

DUTCHESS was attached to ULSTER for administrative and judicial purposes. (O'Callaghan, 1:201)

Attachment of DUTCHESS to ULSTER was confirmed [no change]. (N.Y. Col. Laws, ch. 94/1:453)

DUTCHESS was fully organized, detached from ULSTER. (N.Y. Col. Laws, ch. 94/1:453)

DUTCHESS lost to ALBANY. (N.Y. Col. Laws, ch. 333/1:915)

DUTCHESS gained all of Non-County Area 4; Non-County Area 4 eliminated. (N.Y. Laws 1788, 11th sess., ch. 63/pp. 746-747)

DUTCHESS lost small area to COLUMBIA. (N.Y. Laws 1798-1799, 22d sess., ch. 37/p. 347)

DUTCHESS lost to creation of PUTNAM. (N.Y. Laws 1812, 35th sess., ch. 143, sec. 1/p. 479)

George Carteret and the other New Jersey proprietors executed the Quintipartite Deed to divide New Jersey into two distinct colonies, East New Jersey and West New Jersey. Both colonies were unorganized and technically were non-county areas. East New Jersey included part of present New York. (Snyder, 9, 13; Swindler, 6:398; Van Zandt, 79)

[7 March 1682/1683] East New Jersey lost all non-county territory to creation of 4 counties, including BERGEN (N.J.) and ESSEX (N.J.); East New Jersey eliminated from New York. (Shaw, 1:212, 231; Snyder, 10-11, 29-31; Wall and Pickersgill, 1:63)

ERIE created from NIAGARA. (N.Y. Laws 1820, 44th sess., ch. 228, sec. 1/p. 220)

ERIE gained from NIAGARA. (N.Y. Laws 1824, 47th sess., ch. 242, sec. 6/p. 304)

[7 March 1682/1683] ESSEX (N.J.) created as one of four original counties in East New Jersey; ESSEX included part of New York. (Shaw, 1:212, 231; Snyder, 10-11, 29-31; Wall and Pickersgill, 1:63)

[8 January 1686/1687] ESSEX (N.J.) gained non-county in West New Jersey when the absentee governors of East and West New Jersey agreed on a new division between their colonies. (Snyder, 9, 31)

ESSEX (N.J.) lost to West New Jersey when the absentee governors of East and West New Jersey agreed on a compromise boundary between their colonies from the north end of the Keith Line (1687) eastward to New York. (Snyder, 9, 31)

[21 January 1709/1710] ESSEX (N.J.) lost to BERGEN (N.J.); ESSEX eliminated from New York. (Snyder, 30)

ESSEX created from CLINTON. (N.Y. Laws 1798-1799, 22d sess., ch. 24/p. 332)

ESSEX gained from MONTGOMERY. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

ESSEX lost to CLINTON and FRANKLIN. (N.Y. Laws 1822, 45th sess., ch. 92/p. 94)

ESSEX exchanged with HAMILTON. (N.Y. Laws 1915, 138th sess., ch. 718, secs. 1-3/p. 2364)

FAIRFIELD (Conn.) created by Connecticut as one of its four original counties; part of its western limit was not clearly defined, but included part of New York (town of Rye). (Conn. Col. Recs., 2:34-35)

FAIRFIELD (Conn.) gained town of Woodbury in Connecticut; area within New York was unchanged. (Conn. Col. Recs., 2:253)

FAIRFIELD (Conn.) lost to WESTCHESTER when the provincial boundary between Connecticut and New York was adjusted; FAIRFIELD eliminated from New York. (Bowen, 73-74; Van Zandt, 72-73)

FRANKLIN created from CLINTON. (N.Y. Laws 1808, 31st sess., ch. 43/p. 272)

FRANKLIN gained from ESSEX. (N.Y. Laws 1822, 45th sess., ch. 92/p. 94)

FRANKLIN gained from ST. LAWRENCE. (N.Y. Laws 1913, 136th sess., ch. 385, sec. 1/p. 823)

FULTON created from MONTGOMERY. (N.Y. Laws 1838, 61st sess., ch. 332, sec. 1/p. 328)

FULTON lost to HAMILTON. (N.Y. Laws 1860, 83d sess., ch. 178/p. 298)

GENESEE created from ONTARIO; GENESEE not fully organized, attached to ONTARIO for administrative and judicial purposes. (N.Y. Laws 1802, 25th sess., ch. 64/p. 97)

GENESEE was fully organized, detached from ONTARIO. (N.Y. Laws 1802, 25th sess., ch. 64/p. 97)

GENESEE lost to creation of ALLEGANY. (N.Y. Laws 1806, 29th sess., ch. 162, sec. 1/p. 604)

GENESEE gained from ALLEGANY; lost to creation of CATTARAUGUS, CHAUTAUQUA, and NIAGARA. (N.Y. Laws 1808, 31st sess., ch. 40, secs. 1-2/p. 266)

GENESEE lost to creation of LIVINGSTON and MONROE. (N.Y. Laws 1820, 44th sess., ch. 57, sec. 1/p. 46; ch. 58, sec. 1/p. 50)

GENESEE lost to creation of ORLEANS. (N.Y. Laws 1824, 47th sess., ch. 266, sec. 1/p. 326; N.Y. Laws 1825, 48th sess., ch. 181, secs.1-2/p. 273)

GENESEE gained from ORLEANS. (N.Y. Laws 1826, 49th sess., ch. 269/p. 302)

GENESEE lost to creation of WYOMING. (N.Y. Laws 1841, 64th sess., ch. 196, sec. 1/p. 169)

GLOUCESTER (extinct) created from ALBANY; GLOUCESTER was located entirely in present Vermont. (N.Y. Col. Laws, ch. 1559/5:401)

GLOUCESTER (extinct) gained from CUMBERLAND (extinct), exchanged with CHARLOTTE (now WASHINGTON). (N.Y. Col. Laws, ch. 1559/5:402)

GLOUCESTER eliminated when Vermont declared its independence from New York and became an independent republic. (Slade, 70-73; Van Zandt, 64; C. Williamson, 82-84, map facing 95, 100-102, 112-113)

GREENE created from ALBANY and ULSTER. (N.Y. Laws 1800, 23d sess., ch. 59/p. 503)

GREENE gained from DELAWARE and ULSTER. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

GREENE lost to ULSTER. (N.Y. Laws 1812, 35th sess., ch. 46/p. 382)

GREENE lost to ULSTER. (N.Y. Laws 1814, 37th sess., ch. 211/p. 275)

GREENE gained small area from ULSTER. (N.Y. Laws 1822, 45th sess., ch. 243/p. 257)

GREENE gained small area from COLUMBIA. (N.Y. Laws 1823, 46th sess., ch. 251/p. 377)

GREENE lost to SCHOHARIE. (N.Y. Laws 1836, 59th sess., ch. 31/p. 33)

HAMILTON created from MONTGOMERY; HAMILTON not fully organized, attached to MONTGOMERY for administrative and judicial purposes. (N.Y. Laws 1816, 39th sess., ch. 120, sec. 1/p. 119)

HAMILTON was partially organized, detached from MONTGOMERY. (N.Y. Laws 1837, 60th sess., ch. 238, sec. 1/p. 227)

HAMILTON was fully organized. (Aber and King, 51)

HAMILTON gained from FULTON. (N.Y. Laws 1860, 83d sess., ch. 178/p. 298)

HAMILTON exchanged with ESSEX. (N.Y. Laws 1915, 138th sess., ch. 718, secs. 1-3/p. 2364)

HAMPSHIRE (Mass.) created from non-county area in Massachusetts Colony (towns of Springfield, Northampton, Hadley, and all territory within 30 miles). HAMPSHIRE included a small area in present New York known as "Boston Corner." Eastern boundary was indefinite. (Mass. Recs., vol. 4, pt. 2:52)

HAMPSHIRE (Mass.) gained from Connecticut when the town of Westfield (now Southwick) was created from the town of Springfield. Part of Westfield extended into Connecticut, the result of disagreement over the line between Massachusetts and Connecticut. Area within present New York was unchanged. (Bowen, 53-58; Mass. Recs., vol. 4, pt. 2:432)

HAMPSHIRE (Mass.) gained from Connecticut when the town of Suffield was created. Suffield was entirely within present Connecticut, the result of uncertain geographical knowledge and disagreement over the boundary between the colonies. Area within present New York was unchanged. (Bowen, 53-58; Mass. Recs., 5:13)

HAMPSHIRE (Mass.) gained from Connecticut when town of Enfield was created within present Connecticut. Area within present New York was unchanged. (Bowen, 53-58; Mass. Recs., 5:410-411)

HAMPSHIRE (Mass.) lost to creation of WORCESTER (Mass.); area within present New York was unchanged. (Mass. Col. Acts, vol. 2, ch. 8 [1730-1731], sec. 1/p. 584)

[16 January 1741/1742] HAMPSHIRE (Mass.) lost to WORCESTER (Mass.) when town of Western (now Warren) was created from towns of Brookfield, Brimfield, and Kingsfield; area within present New York was unchanged. (Mass. Col. Acts, vol. 2, ch. 17 [1741-1742], sec. 2/p. 1088)

HAMPSHIRE (Mass.) lost towns of Enfield, Somers (formerly part of Enfield), and Suffield to Connecticut. Area within present New York was unchanged. (Bowen, 62; Hooker, 22, 26)

HAMPSHIRE (Mass.) lost to creation of BERKSHIRE (Mass.); HAMPSHIRE eliminated from present New York. (Mass. Col. Acts, vol. 4, ch. 33 [1760-1761], sec. 1/p. 432)

HERKIMER created from MONTGOMERY. (N.Y. Laws 1791, 14th sess., ch. 10/p. 206)

HERKIMER lost to creation of ONONDAGA. (N.Y. Laws 1794, 17th sess., ch. 18/p. 491)

HERKIMER lost to MONTGOMERY. (N.Y. Laws 1797, 20th sess., ch. 74/p. 100)

HERKIMER lost to creation of CHENANGO and ONEIDA. (N.Y. Laws 1798, 21st sess., ch. 31/p. 170)

HERKIMER lost to CLINTON. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

HERKIMER gained from OTSEGO. (N.Y. Laws 1816, 39th sess., ch. 222/p. 270)

HERKIMER gained from MONTGOMERY. (N.Y. Laws 1816, 40th sess., ch. 184/p. 182)

[11 March 1713/1714] HUNTERDON (N.J.) created from BURLINGTON (N.J.) and non-county area in West New Jersey; HUNTERDON included territory in New York. (Paterson, 4; Snell, 196; Snyder, 32)

[15 March 1738/1739] HUNTERDON (N.J.) lost to creation of MORRIS (N.J.); HUNTERDON eliminated from New York. (Paterson, 12-13; Snyder, 32)

JEFFERSON created from ONEIDA. (N.Y. Laws 1804, 28th sess., ch. 51, secs. 1-2/p. 73)

JEFFERSON lost to LEWIS. (N.Y. Laws 1808, 31st sess., ch. 15/p. 254)

JEFFERSON gained from LEWIS. (N.Y. Laws 1810, 33d sess., ch. 164/p. 68)

JEFFERSON gained from LEWIS. (N.Y. Laws 1812, 36th sess., ch. 117/p. 189)

KINGS created from Yorkshire, which had been organized in New York in 1664. (N.Y. Col. Laws, ch. 4/1:122)

KINGS boundaries were redefined [no change]. (N.Y. Laws 1824, 47th sess., ch. 304/p. 358)

Part of the boundary between KINGS and QUEENS was redefined [no discernible change]. (N.Y. Laws 1881, 104th sess., ch. 624/p. 851)

KINGS gained small area from QUEENS [change too small to display on interactive map; shapefile users see small_changes 1915_pt. for location]. (N.Y. Laws 1915, 138th sess., ch. 410/p. 1325)

Boundary between KINGS and QUEENS was redefined [no discernible change]. (N.Y. Laws 1917, 140th sess., ch. 420/p. 1285)

Boundary between KINGS and QUEENS was redefined [no discernible change]. (N.Y. Laws 1931, 154th sess., ch. 237/p. 617)

LEWIS created from ONEIDA. (N.Y. Laws 1804, 28th sess., ch. 51, secs. 1-2/p. 73)

LEWIS gained from JEFFERSON. (N.Y. Laws 1808, 31st sess., ch. 15/p. 254)

LEWIS lost to JEFFERSON. (N.Y. Laws 1810, 33d sess., ch. 164/p. 68)

LEWIS lost to JEFFERSON. (N.Y. Laws 1812, 36th sess., ch. 117/p. 189)

LITCHFIELD (Conn.) gained the town of Westmoreland, a town created by Connecticut in northeastern Pennsylvania and a narrow strip of New York about 3 miles wide. Connecticut claimed the area based on its 1662 charter. Although LITCHFIELD encroached slightly into New York, the dispute was between Connecticut and Pennsylvania. (Cappon, Petchenik, and Long, 17, 92; Conn. Col. Recs., 13:427, 14:218)

LITCHFIELD (Conn.) gained territory in Pennsylvania and New York when Connecticut enlarged the town of Westmoreland to the Fort Stanwix Indian Treaty line. (Cappon, Petchenik, and Long, 17, 92; Conn. Col. Recs., 15:13)

LITCHFIELD (Conn.) gained territory from New York and exchanged territory with Pennsylvania when Connecticut reduced the area of the town of Westmoreland. (Cappon, Petchenik, and Long, 17, 92; Conn. Col. Recs., 15:197-198)

LITCHFIELD (Conn.) lost all territory in Pennsylvania and New York to creation of WESTMORELAND (Conn., extinct). (Cappon, Petchenik, and Long, 17, 92; Conn. St. Recs., 1:7)

LIVINGSTON created from GENESEE and ONTARIO. (N.Y. Laws 1820, 44th sess., ch. 58, sec. 1/p. 50)

LIVINGSTON gained from STEUBEN. (N.Y. Laws 1822, 45th sess., ch. 30/p. 31)

LIVINGSTON lost to MONROE. (N.Y. Laws 1824, 47th sess., ch. 309/p. 361)

LIVINGSTON gained from ALLEGANY. (N.Y. Laws 1846, 69th sess., ch. 197, sec. 1/p. 235)

LIVINGSTON gained from ALLEGANY. (N.Y. Laws 1857, 80th sess., ch. 166/p. 366)

LIVINGSTON gained small area from ONTARIO [change too small to display on interactive map; shapefile users see small_changes 1922_pt. for location]. (N.Y. Laws 1922, 145th sess., ch. 258, secs. 1-2/p. 615)

MADISON created from CHENANGO. (N.Y. Laws 1806, 29th sess., ch. 70, sec. 1/p. 398)

MADISON gained from ONEIDA. (N.Y. Laws 1836, 59th sess., ch. 393/p. 588)

Boundary between MADISON and ONEIDA was redefined [no discernible change]. (N.Y. Laws 1879, 102d sess., ch. 91/p. 137)

MONROE created from GENESEE and ONTARIO. (N.Y. Laws 1820, 44th sess., ch. 57, sec. 1/p. 46)

MONROE gained from LIVINGSTON. (N.Y. Laws 1824, 47th sess., ch. 309/p. 361)

TRYON (now MONTGOMERY) created from ALBANY. TRYON's western boundary is estimated, since no western limit was specified. New York's western boundary was not definitively established until 1782. (N.Y. Col. Laws, ch. 1534/5:321)

TRYON renamed MONTGOMERY. (N.Y. Laws 1784, 7th sess., ch. 17/p. 21)

MONTGOMERY lost to creation of ONTARIO. (N.Y. Laws 1789, 12th sess., ch. 11/p. 10)

MONTGOMERY lost to creation of HERKIMER, OTSEGO, and TIOGA. (N.Y. Laws 1791, 14th sess., ch. 10/p. 206)

MONTGOMERY gained from HERKIMER. (N.Y. Laws 1797, 20th sess., ch. 74/p. 100)

MONTGOMERY lost to CLINTON, ESSEX, SARATOGA, and WASHINGTON. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

MONTGOMERY lost to creation of HAMILTON; HAMILTON not fully organized, attached to MONTGOMERY for administrative and judicial purposes. (N.Y. Laws 1816, 39th sess., ch. 120, sec. 1/p. 119)

MONTGOMERY lost to HERKIMER. (N.Y. Laws 1816, 40th sess., ch. 184/p. 182)

HAMILTON was partially organized, detached from MONTGOMERY. (N.Y. Laws 1837, 60th sess., ch. 238, sec. 1/p. 227)

MONTGOMERY lost to creation of FULTON. (N.Y. Laws 1838, 61st sess., ch. 332, sec. 1/p. 328)

[15 March 1738/1739] MORRIS (N.J.) created from HUNTERDON (N.J.) and ESSEX (N.J.); MORRIS included territory in New York. (Paterson, 12-13; Snyder, 32)

MORRIS (N.J.) lost to creation of SUSSEX (N.J.); MORRIS eliminated from New York. (Paterson, 15; Snyder, 34)

NASSAU created from QUEENS. (N.Y. Laws 1899, 121st sess., ch. 588, sec. 1/p. 1336)

Boundary between NASSAU and QUEENS was redefined [no discernible change]. (N.Y. Laws 1945, 168th sess., ch. 895, secs. 1-3/pp. 2101-2106)

After completing their re-conquest of New York in August 1673, the Dutch created NEW AMSTEL (now NEW CASTLE, Del.) in present Delaware [no inland limits were specified]. NEW AMSTEL became dependent on New York in 1674. (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)

In the fall of 1674, the Dutch returned New York and the Delaware River settlements, including NEW AMSTEL (now NEW CASTLE, Del.) to the Duke of York in accordance with the Treaty of Westminster (9 February 1673/1674). By 6 November 1674 NEW AMSTEL was made dependent on New York, although Maryland also claimed the area. (Docs. of N.Y., 12:515; George, Nead, and McCamant, 454; Parry, 13:136)

NEW AMSTEL (Del.) was renamed NEW CASTLE (Del.). (Docs. of N.Y., 12:515)

The Duke of York's laws were extended from New York to the Delaware region; NEW CASTLE (Del.) was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563; Reed, 13)

NEW CASTLE (Del.) gained from UPLAND (Del., extinct). (Armstrong, 119, 198)

NEW CASTLE (Del.) lost to creation of ST. JONES (now KENT, Del.). (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)

NEW CASTLE (Del.) eliminated from New York when the Duke of York transferred present Delaware to William Penn. (Pa. Arch., 2d ser., 5:739-744)

NEW YORK created from Yorkshire, which had been organized in New York in 1664. (N.Y. Col. Laws, ch. 4/1:122)

NEW YORK gained all of Non-County Area 2 (the Oyster Islands [now Ellis, Liberty, and Governors Islands]). (N.Y. Col. Laws, ch. 17/1:268)

ORANGE was attached to NEW YORK for administrative and judicial purposes. (O'Callaghan, 1:201)

ORANGE was fully organized, detached from NEW YORK. (O'Callaghan, 1:467)

NEW YORK boundaries were redefined [no change]. (N.Y. Laws 1824, 47th sess., ch. 304/p. 358)

NEW YORK gained from WESTCHESTER. (N.Y. Laws 1873, 96th sess., ch. 613, sec. 1/p. 928)

NEW YORK gained North Brother Island from QUEENS. (N.Y. Laws 1881, 104th sess., ch. 478, sec. 1/p. 649)

NEW YORK gained Rikers Island from QUEENS. (N.Y. Laws 1884, 107th sess., ch. 262/p. 328)

NEW YORK gained from WESTCHESTER. (N.Y. Laws 1895, 118th sess., ch. 934, sec. 1/p. 1948)

NEW YORK lost to creation of BRONX. (N.Y. Laws 1912, 135th sess., ch. 548, sec. 1/p. 1352)

NIAGARA created from ALLEGANY and GENESEE; CATTARAUGUS and CHAUTAUQUA not fully organized, both attached to NIAGARA for administrative and judicial purposes. (N.Y. Laws 1808, 31st sess., ch. 40, secs. 1-2/p. 266)

CHAUTAUQUA fully organized, detached from NIAGARA. (Doty et al, 1:360)

Eastern half of CATTARAUGUS was detached from NIAGARA, attached to ALLEGANY for administrative and judicial purposes. (N.Y. Laws 1814, 37th sess., ch. 123/p. 146)

CATTARAUGUS fully organized, detached from NIAGARA. (N.Y. Laws 1816, 40th sess., ch. 115, sec. 1/p. 107)

NIAGARA lost to creation of ERIE. (N.Y. Laws 1820, 44th sess., ch. 228, sec. 1/p. 220)

NIAGARA lost to ERIE. (N.Y. Laws 1824, 47th sess., ch. 242, sec. 6/p. 304)

Non-County Area 1 (the Brother Islands and Hulett's [now Rikers] Island) created from Yorkshire. (N.Y. Col. Laws, ch. 4/1:122)

Non-County Area 1 (the Brother Islands and Huletts [now Rikers] Island) lost all territory to QUEENS; Non-County Area 1 eliminated. (N.Y. Col. Laws, ch. 17/1:268)

Non-County Area 2 (the Oyster Islands [now Ellis, Liberty, and Governors Islands]) created from Yorkshire. (N.Y. Col. Laws, ch. 4/1:122)

Non-County Area 2 (the Oyster Islands [now Ellis, Liberty, and Governors Islands]) lost all territory to NEW YORK; Non-County Area 2 eliminated. (N.Y. Col. Laws, ch. 17/1:268)

Non-County Area 3 (City Island, Hart Island, Manursing Island, and other small islands in Long Island Sound) created from Yorkshire. (N.Y. Col. Laws, ch. 4/1:122)

Non-County Area 3 gained additional small islands in Long Island Sound when Fairfield (Conn.) eliminated from New York. (Bowen, 73-74; Van Zandt, 72-73)

Non-County Area 3 lost all territory to WESTCHESTER when WESTCHESTER gained Hart Island, City Island, Manursing Island, and other small islands in Long Island Sound; Non-County Area 3 eliminated. (N.Y. Col. Laws, ch. 1376/4:1063)

Non-County Area 4 created from DUTCHESS. (N.Y. Col. Laws, ch. 17/1:268)

Non-County Area 4 lost to ALBANY. (N.Y. Col. Laws, ch. 333/1:915)

Non-County Area 4 lost all territory to DUTCHESS; Non-County Area 4 eliminated. (N.Y. Laws 1788, 11th sess., ch. 63/pp. 746-747)

ONEIDA created from HERKIMER. (N.Y. Laws 1798, 21st sess., ch. 31/p. 170)

ONEIDA gained eastern end of Lake Ontario [not mapped], lost to CLINTON. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

ONEIDA gained from CHENANGO. (N.Y. Laws 1804, 27th sess., ch. 50/p. 172)

ONEIDA lost to creation of JEFFERSON and LEWIS. (N.Y. Laws 1804, 28th sess., ch. 51, secs. 1-2/p. 73)

ONEIDA lost to creation of OSWEGO. (N.Y. Laws 1816, 39th sess., ch. 22, sec. 1/p. 16)

ONEIDA lost to MADISON. (N.Y. Laws 1836, 59th sess., ch. 393/p. 588)

Boundary between ONEIDA and MADISON was redefined [no discernible change]. (N.Y. Laws 1879, 102d sess., ch. 91/p. 137)

ONONDAGA created from HERKIMER and TIOGA. (N.Y. Laws 1794, 17th sess., ch. 18/p. 491)

ONONDAGA lost to creation of CAYUGA. (N.Y. Laws 1798-1799, 22d sess., ch. 26/p. 333)

ONONDAGA lost to creation of CORTLAND. (N.Y. Laws 1808, 31st sess., ch. 194, sec. 1/p. 365)

ONONDAGA lost to creation of OSWEGO. (N.Y. Laws 1816, 39th sess., ch. 22, sec. 1/p. 16)

ONONDAGA exchanged small areas with CAYUGA. (N.Y. Rev. Stat., 3:14-15)

ONTARIO created from MONTGOMERY. (N.Y. Laws 1789, 12th sess., ch. 11/p. 10)

ONTARIO lost to creation of STEUBEN. (N.Y. Laws 1796, 19th sess., ch. 29/p. 667)

ONTARIO exchanged with CAYUGA. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

ONTARIO lost to creation of GENESEE; GENESSEE not fully organized, attached to ONTARIO for administrative and judicial purposes. (N.Y. Laws 1802, 25th sess., ch. 64/p. 97)

GENESEE was fully organized, detached from ONTARIO. (N.Y. Laws 1802, 25th sess., ch. 64/p. 97)

ONTARIO gained from CAYUGA. (N.Y. Laws 1804, 27th sess., ch. 31/p. 112)

ONTARIO gained from STEUBEN. (N.Y. Laws 1814, 37th sess., ch. 24/p. 27)

ONTARIO lost to creation of LIVINGSTON and MONROE. (N.Y. Laws 1820, 44th sess., ch. 57, sec. 1/p. 46; ch. 58, sec. 1/p. 50)

ONTARIO lost to creation of YATES. (N.Y. Laws 1823, 46th sess., ch. 30, sec. 1/p. 21)

ONTARIO lost to creation of WAYNE. (N.Y. Laws 1823, 46th sess., ch. 138, sec. 1/p. 158)

ONTARIO lost to SENECA. (N.Y. Rev. Stat., 3:14-15)

Legislature authorized ONTARIO to gain from YATES, but change never took effect. (N.Y. Laws 1860, 83d sess., ch. 76/p. 120)

ONTARIO lost small area to LIVINGSTON [change too small to display on interactive map; shapefile users see small_changes 1922_pt. for location]. (N.Y. Laws 1922, 145th sess., ch. 258, secs. 1-2/p. 615)

ORANGE created from non-county area in New York. (N.Y. Col. Laws, ch. 4/1:122)

ORANGE was attached to NEW YORK for administrative and judicial purposes. (O'Callaghan, 1:201)

ORANGE was fully organized, detached from NEW YORK. (O'Callaghan, 1:467)

ORANGE lost to ULSTER. (N.Y. Col. Laws, ch. 94/1:453)

ORANGE gained from ULSTER. (N.Y. Col. Laws, ch. 202/1:686)

ORANGE gained the western half of the Hudson River [not mapped]. (N.Y. Col. Laws, ch. 1376/4:1063)

ORANGE gained from BERGEN (N.J.) and SUSSEX (N.J.) when King George III approved the boundary between New Jersey and New York, as determined by a commission appointed in 1769 at the joint request of the two colonies after decades of dispute. (Pratt, 2:789; Snyder, 13-14; Van Zandt, 76)

ORANGE lost to creation of ROCKLAND. (N.Y. Laws 1798, 21st sess., ch. 16/p. 156)

ORANGE gained from ULSTER. (N.Y. Laws 1798, 21st sess., ch. 93/p. 273)

ORANGE lost to ROCKLAND. (N.Y. Laws 1800, 23d sess., ch. 51/p. 493)

ORLEANS created from GENESEE. (N.Y. Laws 1824, 47th sess., ch. 266, sec. 1/p. 326; N.Y. Laws 1825, 48th sess., ch. 181, secs.1-2/p. 273)

ORLEANS lost to GENESEE. (N.Y. Laws 1826, 49th sess., ch. 269/p. 302)

OSWEGO created from ONEIDA and ONONDAGA. (N.Y. Laws 1816, 39th sess., ch. 22, sec. 1/p. 16)

OTSEGO created from MONTGOMERY. (N.Y. Laws 1791, 14th sess., ch. 10/p. 206)

OTSEGO lost to creation of SCHOHARIE. (N.Y. Laws 1795, 18th sess., ch. 42/p. 588)

OTSEGO lost to creation of DELAWARE. (N.Y. Laws 1797, 20th sess., ch. 33/p. 39)

OTSEGO lost to HERKIMER. (N.Y. Laws 1816, 39th sess., ch. 222/p. 270)

OTSEGO lost to DELAWARE. (N.Y. Laws 1816, 40th sess., ch. 140/p. 146)

OTSEGO gained from DELAWARE. (N.Y. Laws 1822, 45th sess., ch. 210/p. 206)

PUTNAM created from DUTCHESS. (N.Y. Laws 1812, 35th sess., ch. 143, sec. 1/p. 479)

QUEENS created from Yorkshire, which had been organized in 1664. (N.Y. Col. Laws, ch. 4/1:122)

QUEENS gained all of Non-County Area 1 (the Brother Islands and Huletts [now Rikers] Island). (N.Y. Col. Laws, ch. 17/1:268)

QUEENS gained islands in Long Island Sound that had not previously been part of any county [not mapped]. (N.Y. Col. Laws, ch. 1376/4:1063)

Boundary between QUEENS and SUFFOLK was redefined [no discernible change]. (N.Y. Laws 1860, 83d sess., ch. 530/pp. 1074-1076)

QUEENS lost North Brother Island to NEW YORK. (N.Y. Laws 1881, 104th sess., ch. 478, sec. 1/p. 649)

Part of the boundary between QUEENS and KINGS was redefined [no discernible change]. (N.Y. Laws 1881, 104th sess., ch. 624/p. 851)

QUEENS lost Rikers Island to NEW YORK. (N.Y. Laws 1884, 107th sess., ch. 262/p. 328)

QUEENS lost to SUFFOLK when town of Huntington gained Lloyd's Neck from town of Oyster Bay. (N.Y. Laws 1886, 109th sess., ch. 667/pp. 956-957)

QUEENS lost to creation of NASSAU. (N.Y. Laws 1899, 121st sess., ch. 588, sec. 1/p. 1336)

QUEENS lost small area to KINGS [change too small to display on interactive map; shapefile users see small_changes 1915_pt. for location]. (N.Y. Laws 1915, 138th sess., ch. 410/p. 1325)

Boundary between QUEENS and KINGS was redefined [no discernible change]. (N.Y. Laws 1917, 140th sess., ch. 420/p. 1285)

Boundary between QUEENS and KINGS was redefined [no discernible change]. (N.Y. Laws 1931, 154th sess., ch. 237/p. 617)

Boundary between QUEENS and NASSAU was redefined [no discernible change]. (N.Y. Laws 1945, 168th sess., ch. 895, secs. 1-3/pp. 2101-2106)

QUEENS lost South Brother Island to BRONX. (N.Y. Laws 1964, 187th sess., ch. 578/p. 1606)

RENSSELAER created from ALBANY. (N.Y. Laws 1791, 14th sess., ch. 4/p. 201)

RENSSELAER gained small area from WASHINGTON. (N.Y. Laws 1822, 45th sess., ch. 116/p. 116)

RENSSELAER lost Havre Island to SARATOGA [change too small to display on interactive map; shapefile users see small_changes 1888_pt. for location]. (N.Y. Laws 1888, 111th sess., ch. 42/p. 85)

RICHMOND created from Yorkshire, which had been organized in New York in 1664. (N.Y. Col. Laws, ch. 4/1:122)

RICHMOND boundaries were redefined [no change]. (N.Y. Laws 1824, 47th sess., ch. 304/p. 358)

ROCKLAND created from ORANGE. (N.Y. Laws 1798, 21st sess., ch. 16/p. 156)

ROCKLAND gained from ORANGE. (N.Y. Laws 1800, 23d sess., ch. 51/p. 493)

RUTLAND (Vt.) overlapped part of CHARLOTTE (now WASHINGTON) when Vermont attempted to annex part of New York (known as West Union). New York did not lose control of the area. (Vt. State Papers, 13:45-46)

RUTLAND (Vt.) overlap of CHARLOTTE (now WASHINGTON) ended when Vermont gave up its attempt to annex the West Union. (Vt. State Papers, 3, pt. 2: 67-68)

RUTLAND (Vt.) lost to WASHINGTON when New York gained a small area west of the village of Fair Haven from Vermont due to a change in the course of the Poultney River [change too small to map]. (U.S. Stat., vol. 21, ch. 49 [1880]/p. 72)

ST. JONES (now KENT, Del.) created under the authority of the Duke of York in present Delaware from NEW CASTLE (Del.) and HOARKILL (later DEALE, now SUSSEX, Del.); no inland limits were specified. (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)

ST. JONES (now KENT, Del.) eliminated from New York when the Duke of York transferred present Delaware to William Penn. (Pa. Arch., 2d ser., 5:739-744)

ST. LAWRENCE created from CLINTON. (N.Y. Laws 1802, 25th sess., ch. 16/p. 24)

ST. LAWRENCE lost to FRANKLIN. (N.Y. Laws 1913, 136th sess., ch. 385, sec. 1/p. 823)

SARATOGA created from ALBANY. (N.Y. Laws 1791, 14th sess., ch. 4/p. 201)

SARATOGA gained from MONTGOMERY. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

SARATOGA gained Havre Island from ALBANY and RENSSELAER [change too small to display on interactive map; shapefile users see small_changes 1888_pt. for location]. (N.Y. Laws 1888, 111th sess., ch. 42/p. 85)

SCHENECTADY created from ALBANY. (N.Y. Laws 1808, 32d sess., ch. 65, sec. 1/p. 458)

SCHOHARIE created from ALBANY and OTSEGO. (N.Y. Laws 1795, 18th sess., ch. 42/p. 588)

SCHOHARIE lost to ALBANY. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

SCHOHARIE gained from GREENE. (N.Y. Laws 1836, 59th sess., ch. 31/p. 33)

SCHUYLER created from CHEMUNG, STEUBEN, and TOMPKINS. (N.Y. Laws 1854, 77th sess., ch. 386, secs. 1-4, 6/pp. 913-915)

SCHUYLER lost to YATES. (N.Y. Laws 1946, 169th sess., ch. 901/p. 1686)

SENECA created from CAYUGA. (N.Y. Laws 1804, 27th sess., ch. 31/p. 112)

SENECA lost to creation of TOMPKINS. (N.Y. Laws 1816, 40th sess., ch. 189, sec. 1/p. 197)

SENECA gained from TOMPKINS. (N.Y. Laws 1819, 42d sess., ch. 190/p. 239)

SENECA lost to creation of WAYNE. (N.Y. Laws 1823, 46th sess., ch. 138, sec. 1/p. 158)

SENECA gained from ONTARIO and YATES. (N.Y. Rev. Stat., 3:14-15)

SENECA lost to YATES. (N.Y. Laws 1946, 169th sess., ch. 901/p. 1686)

STEUBEN created from ONTARIO. (N.Y. Laws 1796, 19th sess., ch. 29/p. 667)

STEUBEN gained from CAYUGA. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

STEUBEN gained from CAYUGA. (N.Y. Laws 1804, 27th sess., ch. 31/p. 112)

STEUBEN lost to ALLEGANY. (N.Y. Laws 1808, 31st sess., ch. 38/p. 263)

STEUBEN lost to ONTARIO. (N.Y. Laws 1814, 37th sess., ch. 24/p. 27)

STEUBEN lost to LIVINGSTON. (N.Y. Laws 1822, 45th sess., ch. 30/p. 31)

STEUBEN lost to YATES. (N.Y. Laws 1824, 47th sess., ch. 171/p. 182)

STEUBEN lost to TOMPKINS. (N.Y. Rev. Stat., 3:14-15)

STEUBEN lost to creation of SCHUYLER. (N.Y. Laws 1854, 77th sess., ch. 386, secs. 1-4, 6/pp. 913-915)

SUFFOLK created from Yorkshire, which had been organized in New York in 1664. (N.Y. Col. Laws, ch. 4/1:122)

Boundary between SUFFOLK and QUEENS was redefined [no discernible change]. (N.Y. Laws 1860, 83d sess., ch. 530/pp. 1074-1076)

SUFFOLK gained from QUEENS when town of Huntington gained Lloyd's Neck from town of Oyster Bay. (N.Y. Laws 1886, 109th sess., ch. 667/pp. 956-957)

SULLIVAN created from ULSTER. (N.Y. Laws 1808, 32d sess., ch. 126, sec. 1/p. 495)

SUSSEX (N.J.) created from MORRIS (N.J.); SUSSEX included territory in New York. (Paterson, 15; Snyder, 34)

SUSSEX (N.J.) lost to ORANGE and ULSTER when King George III approved the boundary between New Jersey and New York, as determined by a commission appointed in 1769 at the joint request of the two colonies after decades of dispute; SUSSEX (N.J.) eliminated from New York. (Pratt, 2:789; Snyder, 13-14; Van Zandt, 76)

TIOGA created from MONTGOMERY. (N.Y. Laws 1791, 14th sess., ch. 10/p. 206)

TIOGA lost to creation of ONONDAGA. (N.Y. Laws 1794, 17th sess., ch. 18/p. 491)

TIOGA lost to creation of CHENANGO. (N.Y. Laws 1798, 21st sess., ch. 31/p. 170)

TIOGA lost to creation of BROOME. (N.Y. Laws 1806, 29th sess., ch. 89/p. 431)

TIOGA gained from BROOME. (N.Y. Laws 1822, 45th sess., ch. 75, sec. 1/p. 76)

TIOGA lost to TOMPKINS. (N.Y. Laws 1822, 45th sess., ch. 75, sec. 13/p. 78)

TIOGA lost to creation of CHEMUNG. (N.Y. Laws 1836, 59th sess., ch. 77, sec. 1/p. 102)

TOMPKINS created from BROOME, CAYUGA, and SENECA. (N.Y. Laws 1816, 40th sess., ch. 189, sec. 1/p. 197)

TOMPKINS lost to SENECA. (N.Y. Laws 1819, 42d sess., ch. 190/p. 239)

TOMPKINS gained from TIOGA. (N.Y. Laws 1822, 45th sess., ch. 75, sec. 13/p. 78)

TOMPKINS gained from STEUBEN and YATES. (N.Y. Rev. Stat., 3:14-15)

TOMPKINS lost to creation of SCHUYLER. (N.Y. Laws 1854, 77th sess., ch. 386, secs. 1-4, 6/pp. 913-915)

ULSTER created from non-county area in New York. (N.Y. Col. Laws, ch. 4/1:122)

DUTCHESS was attached to ULSTER for administrative and judicial purposes. (O'Callaghan, 1:201)

ULSTER gained from ORANGE; DUTCHESS's attachment to ULSTER was confirmed. (N.Y. Col. Laws, ch. 94/1:453)

DUTCHESS was fully organized, detached from ULSTER. (N.Y. Col. Laws, ch. 94/1:453)

ULSTER lost to ORANGE. (N.Y. Col. Laws, ch. 202/1:686)

ULSTER gained from SUSSEX (N.J.) when King George III approved the boundary between New Jersey and New York, as determined by a commission appointed in 1769 at the joint request of the two colonies after decades of dispute. (Pratt, 2:789; Snyder, 13-14; Van Zandt, 76)

ULSTER gained from ALBANY. (N.Y. Col. Laws, ch. 1665/5:662)

ULSTER lost to creation of DELAWARE. (N.Y. Laws 1797, 20th sess., ch. 33/p. 39)

ULSTER gained from ALBANY, lost to ORANGE. (N.Y. Laws 1798, 21st sess., ch. 93/p. 273)

ULSTER lost to creation of GREENE. (N.Y. Laws 1800, 23d sess., ch. 59/p. 503)

ULSTER lost to DELAWARE and GREENE. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

ULSTER lost to creation of SULLIVAN. (N.Y. Laws 1808, 32d sess., ch. 126, sec. 1/p. 495)

ULSTER gained from GREENE. (N.Y. Laws 1812, 35th sess., ch. 46/p. 382)

ULSTER gained small area from DELAWARE. (N.Y. Laws 1812, 35th sess., ch. 88/p. 427)

ULSTER gained from GREENE. (N.Y. Laws 1814, 37th sess., ch. 211/p. 275)

ULSTER lost small area to GREENE. (N.Y. Laws 1822, 45th sess., ch. 243/p. 257)

After completing their re-conquest of New York in August 1673, the Dutch created UPLAND (Del., extinct) in present Delaware and Pennsylvania [no inland limits were specified]. UPLAND became dependent on New York in 1674. (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)

In the fall of 1674, the Dutch returned New York and the Delaware River settlements, including UPLAND (Del., extinct) to the Duke of York in accordance with the Treaty of Westminster (9 February 1673/1674). By 6 November 1674 UPLAND was made dependent on New York although Maryland also claimed the area. (Docs. of N.Y., 12:515; George, Nead, and McCamant, 454; Parry, 13:136)

The Duke of York's laws were extended from New York to the Delaware region; UPLAND (Del., extinct) was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563; Reed, 13)

UPLAND (Del., extinct) lost to NEW CASTLE (Del.). (Armstrong, 119, 198)

UPLAND (Del., extinct) was eliminated when the newly chartered proprietary colony of Pennsylvania instituted government for all territory on the west side of the Delaware River from twelve miles north of New Castle to 42 degrees north latitude. (Armstrong, 196; Swindler, 8:243)

WARREN created from WASHINGTON. (N.Y. Laws 1812, 36th sess., ch. 50/p. 48)

CHARLOTTE (now WASHINGTON) created from ALBANY. (N.Y. Col. Laws, ch. 1534/5:321)

CHARLOTTE (now WASHINGTON) exchanged with GLOUCESTER (extinct), lost to CUMBERLAND (extinct). (N.Y. Col. Laws, ch. 1559/5:402)

CHARLOTTE (now WASHINGTON) gained from ALBANY, exchanged with CUMBERLAND (extinct). (N.Y. Col. Laws, ch. 1719/5:779)

CHARLOTTE (now WASHINGTON) lost territory when Vermont declared its independence from New York and became an independent republic; CHARLOTTE eliminated from Vermont. (Slade, 70-73; Van Zandt, 64; C. Williamson, 82-84, map facing 95, 100-102, 112-113)

RUTLAND (Vt.) overlap of CHARLOTTE (now WASHINGTON) ended when Vermont gave up its attempt to annex the West Union. (Vt. State Papers, vol. 3, pt. 2, pp. 67-68)

CHARLOTTE renamed WASHINGTON. (N.Y. Laws 1784, 7th sess., ch. 17/p. 21)

WASHINGTON lost to creation of CLINTON. New York, refusing to recognize the independence of Vermont and the elimination of CUMBERLAND (extinct) in 1777, attempted unsuccessfully to adjust the former boundary between WASHINGTON and CUMBERLAND (extinct) in Vermont, but to no effect. (N.Y. Laws 1788, 11th sess., ch. 63/pp. 746-747)

WASHINGTON gained from ALBANY. (N.Y. Laws 1791, 14th sess., ch. 4/p. 201)

WASHINGTON gained from MONTGOMERY. (N.Y. Laws 1801, 24th sess., ch. 123/p. 290)

WASHINGTON lost to creation of WARREN. (N.Y. Laws 1812, 36th sess., ch. 50/p. 48)

WASHINGTON lost small area to RENSSELAER. (N.Y. Laws 1822, 45th sess., ch. 116/p. 116)

WASHINGTON gained from RUTLAND (Vt.) when New York gained a small area west of the village of Fair Haven from Vermont due to a change in the course of the Poultney River [change too small to map]. (U.S. Stat., vol. 21, ch. 49 [1880]/p. 72)

WAYNE created from ONTARIO and SENECA. (N.Y. Laws 1823, 46th sess., ch. 138, sec. 1/p. 158)

WESTCHESTER created from Yorkshire, which had been organized in New York in 1664. (N.Y. Col. Laws, ch. 4/1:122)

WESTCHESTER gained from FAIRFIELD (Conn.) when the provincial boundary between Connecticut and New York was adjusted; FAIRFIELD (Conn.) eliminated from New York. (Bowen, 73-74; Van Zandt, 72-73)

WESTCHESTER gained all of Non-County Area 3 (Hart Island, City Island, Manursing Island, and other small islands in Long Island Sound); Non-County Area 3 eliminated. (N.Y. Col. Laws, ch. 1376/4:1063)

WESTCHESTER lost to NEW YORK. (N.Y. Laws 1873, 96th sess., ch. 613, sec. 1/p. 928)

WESTCHESTER lost to NEW YORK. (N.Y. Laws 1895, 118th sess., ch. 934, sec. 1/p. 1948)

WESTCHESTER lost small area to BRONX. (N.Y. Laws 1917, 140th sess., ch. 664, sec. 1/p. 2022)

Boundary between WESTCHESTER and BRONX was redefined [no discernible change]. (N.Y. Laws 1950, 173d sess., ch. 650/p. 1508)

WESTMORELAND (Conn., extinct) created from LITCHFIELD (Conn.) when Connecticut removed the town of Westmoreland from LITCHFIELD and made it "a distinct County;" WESTMORELAND was located entirely within Pennsylvania and a narrow strip of New York about 3 miles wide. (Cappon, Petchenik, and Long, 17, 92; Conn. St. Recs., 1:7)

WESTMORELAND (Conn.) eliminated when a special congressional court of arbitration ruled that the territory belonged in Pennsylvania, not Connecticut. (Susquehannah Co. Papers, 7: xxxiii, 245)

George Carteret and the other New Jersey proprietors executed the Quintipartite Deed to divide New Jersey into two distinct colonies, East New Jersey and West New Jersey. Both colonies were unorganized and technically were non-county areas. West New Jersey included a small part of present New York. (Snyder, 9, 13; Swindler, 6:398; Van Zandt, 79)

In 1681, the creation of the county-like courts of Burlington and Salem in the southern portion of West New Jersey left the northern portion of the colony completely unorganized as a non-county area. A small portion of West New Jersey was in present New York. (Snyder, 12)

[8 January 1686/1687] West New Jersey lost all non-county area in New York to ESSEX (N.J.) when the absentee governors of East and West New Jersey agreed on a new division between their colonies. (Snyder, 9, 31)

West New Jersey gained from ESSEX (N.J.) and SOMERSET (N.J.) when the absentee governors of East and West New Jersey agreed on a compromise boundary between their colonies from the north end of the Keith Line (1687) eastward to New York. (Snyder, 9, 31)

21 January 1709/1710. The non-county area of West New Jersey lost to BURLINGTON (N.J.); area within New York was unchanged. (Snyder, 30-32)

[11 March 1713/1714] West New Jersey lost all non-county area to creation of HUNTERDON (N.J.). (Paterson, 4; Snell, 196; Snyder, 32)

Vermont attempted to annex part of New York east of the Hudson River (the so-called West Union); inhabitants in the area favored Vermont's township form of government, while Vermont hoped to gain bargaining power through expansion. New York did not lose control of the area. The West Union included parts of ALBANY and CHARLOTTE (now WASHINGTON). (Vt. State Papers, 13:45-46; Newton, 83-87; Williamson, C., 101-102)

Vermont's overlap of New York ended when Vermont gave up its attempt to annex the West Union. (Vt. State Papers, 3, pt. 2: 67-68)

WYOMING created from GENESEE. (N.Y. Laws 1841, 64th sess., ch. 196, sec. 1/p. 169)

WYOMING gained from ALLEGANY. (N.Y. Laws 1846, 69th sess., ch. 51/p. 53)

YATES created from ONTARIO. (N.Y. Laws 1823, 46th sess., ch. 30, sec. 1/p. 21)

YATES gained from STEUBEN. (N.Y. Laws 1824, 47th sess., ch. 171/p. 182)

YATES lost to SENECA and TOMPKINS. (N.Y. Rev. Stat., 3:14-15)

Legislature authorized ONTARIO to gain from YATES, but change never took effect. (N.Y. Laws 1860, 83d sess., ch. 76/p. 120)

New York: Individual County Chronologies