Delaware: Individual County Chronologies

Delaware Atlas of Historical County Boundaries

John H. Long, Editor; Peggy Tuck Sinko, Associate Editor and 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

Copyright The Newberry Library 2008


CHESTER (Pa.)

30 Jun 1921
CHESTER (Pa.) exchanged narrow strips of territory with NEW CASTLE when the U.S. Congress ratified the agreement between Delaware and Pennsylvania on the demarcation of their common boundary. Net result was that CHESTER (Pa.) gained a small sliver of territory along the circular line (known as the Horn) and NEW CASTLE gained a small triangular area by the northeast corner of Maryland (known as the Wedge) [not mapped]. (Lunt, 59, 61; Van Zandt, 83)

DEALE (see SUSSEX)


DURHAM (Md., extinct)

22 Oct 1669
Maryland implicitly asserted its claim to the area of present Delaware by creating two counties along the Atlantic coast: DURHAM (Md., extinct) was created north of "Hoar Kill" (now Lewes) from SOMERSET (Md.) and non-county area along the Atlantic coast; and an unnamed county was created in present southern Delaware and Maryland [unnamed county not mapped]. These counties were never operational. DURHAM included territory in present Delaware and Pennsylvania. (Archives of Md., 5:56-57)
19 Jun 1672
DURHAM (Md., extinct) lost all territory to creation of WORCESTER (Md., original, extinct); DURHAM eliminated. (Archives of Md., 5:107-110)

HOARKILL (see SUSSEX)


KENT

21 Jun 1680
ST. JONES (now KENT) created under the authority of the Duke of York from NEW CASTLE and HOARKILL (later DEALE, now SUSSEX); no inland limits specified. (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)
24 Aug 1682
ST. JONES (now KENT) was transferred with the rest of the western Delaware Bay region from the Duke of York to William Penn. (Pa. Archives, 2d ser., 5:739-744)
07 Dec 1682
William Penn annexed the Delaware River region to Pennsylvania. ST. JONES (now KENT) became part of the area known as the Territories or Lower Counties of Pennsylvania. Maryland did not abandon its claim to the Delaware region but had no control there. (Swindler, 2:191-192)
by 21 Dec 1682
ST. JONES renamed KENT. (Penn, 2:324)
25 Dec 1682
KENT lost to SUSSEX. (Turner, 82)
28 May 1687
KENT gained from SUSSEX; lost to NEW CASTLE. (Scharf, 2:1030)
by 29 Nov 1704
KENT was separated from Pennsylvania when Delaware became a distinct colony. (Penn, 4:309; Rodney, 239)
02 Sep 1775
KENT lost to SUSSEX; boundary was completed westward to the Maryland line. (Del., Laws of the State, vol. 1, ch. 229, sec. 4/pp. 569-570)
04 Jul 1776
The three Lower Counties, including KENT, became an independent state. The name Delaware was formally adopted on 20 September 1776. (Declaration of Independence; Swindler, 2:197)
18 Feb 1841
KENT gained from NEW CASTLE. (Del. Laws 1841, ch. 347/pp. 401-402; Scharf, 2:1030)

NEW AMSTEL (see NEW CASTLE)


NEW CASTLE

12 Sep 1673
After completing their re-conquest of New York in August 1673, the Dutch created NEW AMSTEL (now NEW CASTLE) as one of three countylike courts that became original counties in Delaware; no inland limits specified. (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)
06 Nov 1674
In the Autumn of 1674, the Dutch returned New York and the Delaware River settlements, including NEW AMSTEL (now NEW CASTLE) 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)
by 11 Nov 1674
NEW AMSTEL was renamed NEW CASTLE. (Docs. of N.Y., 12:515)
22 Sep 1676
The Duke of York's laws were extended from New York to the Delaware region; NEW CASTLE was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563, Reed, 13)
12 Nov 1678
NEW CASTLE gained from UPLAND (extinct). (Armstrong, 119, 198)
21 Jun 1680
NEW CASTLE lost to creation of ST. JONES (now KENT). (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)
24 Aug 1682
NEW CASTLE was transferred with the rest of the western Delaware Bay region from the Duke of York to William Penn. NEW CASTLE Implicitly gained the southern remnant of UPLAND (extinct) south of the 12-mile circular boundary around New Castle established 4 March 1680/1681 as the northern limit of the Delaware region. (Pa. Archives, 2d ser., 5:739-744)
07 Dec 1682
William Penn annexed the Delaware River region to Pennsylvania. NEW CASTLE became part of the area known as the Territories or Lower Counties of Pennsylvania. Maryland did not abandon its claim to the Delaware region but had no control there. (Swindler, 2:191-192)
28 May 1687
NEW CASTLE gained from KENT. (Scharf, 2:1030)
by 29 Nov 1704
NEW CASTLE was separated from Pennsylvania when Delaware became a distinct colony. (Penn, 4:309; Rodney, 239)
02 Sep 1775
NEW CASTLE boundary was completed westward to the Maryland line. (Del., Laws of the State, vol. 1, ch. 229, sec. 4/pp. 569-570)
04 Jul 1776
The three Lower Counties, including NEW CASTLE, became an independent state. The name Delaware was formally adopted on 20 September 1776. (Declaration of Independence; Swindler, 2:197)
18 Feb 1841
NEW CASTLE lost to KENT. (Del. Laws 1841, ch. 347/pp. 401-402; Scharf, 2:1030)
30 Jun 1921
NEW CASTLE exchanged narrow strips of territory with CHESTER (Pa.) when the U.S. Congress ratified the agreement between Delaware and Pennsylvania on the demarcation of their common boundary. NEW CASTLE lost a small sliver of territory along the circular line (known as the Horn) and gained a small triangular area by the northeast corner of Maryland (known as the Wedge) [not mapped]. (Lunt, 59, 61; Van Zandt, 83)

Non-County Area 1

10 May 1732
Non-County Area 1 created in Delaware when representatives of Maryland and Pennsylvania agreed on the boundary between their two colonies, including the line between Maryland and Delaware. The two sides could not agree on how to implement the agreement, and the line was not settled until 4 July 1760 when the Penns and Lord Baltimore confirmed the first agreement. King George III did not approve the survey until 1769. (Paullin, 84-85, pl. 100; Pa. Archives, ser. 2, 16:449-460)
02 Sep 1775
Non-County Area 1 lost all territory to KENT, NEW CASTLE, and SUSSEX when the county boundaries were extended westward to the Maryland line; Non-County Area 1 eliminated. (Del., Laws of the State, vol. 1, ch. 229, sec. 4/pp. 569-570)

SOMERSET (Md.)

22 Aug 1666
SOMERSET (Md.) created by Maryland from non-county area south of TALBOT (Md.). Area included all land between the Nanticoke River and the Atlantic Ocean (including part of southern Delaware), but Maryland did not try to exercise jurisdiction in the eastern part that is present Delaware. (Archives of Md., 3:553-555)
22 Oct 1669
Maryland implicitly asserted its claim to the area of present Delaware by creating two counties along the Atlantic Coast: SOMERSET (Md.) lost to creation of DURHAM (Md., extinct), and an unnamed county [unnamed county not mapped]; neither county became operational. (Archives of Md., 5:56-57)
13 Nov 1685
King James II approved the decision of the Committee for Trade and Plantations, which concluded the area of present Delaware belonged to Pennsylvania, not Maryland; SOMERSET (Md.) lost to SUSSEX and Pennsylvania, and was eliminated from present Delaware. (Lunt, 47; Report on the Resurvey, 145; Van Zandt, 81)

ST. JONES (see KENT)


SUSSEX

12 Sep 1673
After completing their re-conquest of New York in August 1673, the Dutch created HOARKILL (later DEALE, now SUSSEX) as one of three countylike courts that became original counties in Delaware; no inland limits were specified. (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)
06 Nov 1674
In the Autumn of 1674, the Dutch returned New York and the Delaware River settlements, including HOARKILL (later DEALE, now SUSSEX) 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)
22 Sep 1676
The Duke of York's laws were extended from New York to the Delaware region; HOARKILL (later DEALE, now SUSSEX) was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563; Reed, 13)
21 Jun 1680
HOARKILL (later DEALE, now SUSSEX) lost to creation of ST. JONES (now KENT); no inland limits specified. (Docs. of N.Y., 12:654, 664, 666-667; Reed, 12)
by 15 Jun 1681
HOARKILL renamed DEALE (now SUSSEX). (Turner, 54; Reed, 13)
24 Aug 1682
DEALE (now SUSSEX) was transferred with the rest of the western Delaware Bay region from the Duke of York to William Penn. (Pa. Archives, 2d ser., 5:739-744)
07 Dec 1682
William Penn annexed the Delaware River region to Pennsylvania. DEALE (now SUSSEX) became part of the area known as the Territories or Lower Counties of Pennsylvania. Maryland did not abandon its claim to the Delaware region but had no control there. (Swindler, 2:191-192)
25 Dec 1682
DEALE renamed SUSSEX; SUSSEX gained from KENT. (Turner, 82)
13 Nov 1685
SUSSEX implicitly gained territory immediately north of Maryland, including part of SOMERSET (Md.) when King James II approved the decision of the Committee for Trade and Plantations, which concluded the area of present Delaware belonged to Pennsylvania, not Maryland. The exact boundary line was not settled until 1760. (Lunt, 47; Report on the Resurvey, 145; Van Zandt, 81)
28 May 1687
SUSSEX lost to KENT. (Scharf, 2:1030)
by 29 Nov 1704
SUSSEX was separated from Pennsylvania when Delaware became a distinct colony. (Penn, 4:309; Rodney, 239)
04 Jul 1760
The proprietors of Maryland and Pennsylvania and the Lower Counties (now Delaware) agreed on the course of their common boundary. This settled the southern boundary of SUSSEX, although surveying problems prevented final implementation until 1769. (Lunt, 56; Report on the Resurvey, 179; Van Zandt, 81-82)
02 Sep 1775
SUSSEX gained from KENT; boundary was completed westward to the Maryland line. (Del., Laws of the State, vol. 1, ch. 229, sec. 4/pp. 569-570)
04 Jul 1776
The three Lower Counties, including SUSSEX, became an independent state. The name Delaware was formally adopted on 20 September 1776. (Declaration of Independence; Swindler, 2:197)

UPLAND (extinct)

12 Sep 1673
After completing their re-conquest of New York in August 1673, the Dutch created UPLAND (extinct) as one of three countylike courts that became original counties in Delaware; no inland limits specified. UPLAND included territory in present Delaware and Pennsylvania, and overlapped part of WORCESTER (Md., original, extinct). (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)
06 Nov 1674
In the Autumn of 1674, the Dutch returned New York and the Delaware River settlements, including UPLAND (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)
22 Sep 1676
The Duke of York's laws were extended from New York to the Delaware region; UPLAND (extinct) was formally placed under the Duke of York's laws. (Docs. of N.Y., 12:561-563; Reed, 13)
12 Nov 1678
UPLAND (extinct) lost to NEW CASTLE. (Armstrong, 119, 198)
04 Mar 1681
[4 March 1680/1681] King Charles II created Pennsylvania from parts of earlier grants to Connecticut and Virginia, granting it as a proprietary colony to William Penn. Territory to be bounded on the southeast by the arc of a circle, 12 miles in radius and centered in New Castle, Del. This grant implicitly set the 12-mile circle as the northern limit of the Delaware region, covering most of UPLAND (extinct). (Swindler, 8:243)
by 30 Jun 1681
UPLAND was eliminated when the newly chartered proprietary colony of Pennsylvania instituted government for all territory on the west side of the Delaware River from 12 miles north of New Castle to the parallel of 42 degrees north latitude, including area also claimed by Maryland. A southern remant of UPLAND (extinct) that had extended south of the circular boundary around New Castle was added to NEW CASTLE in 1682. (Armstrong, 196; Swindler, 8:243)

WORCESTER (Md., original, extinct)

19 Jun 1672
WORCESTER (Md., original, extinct) created by Maryland from DURHAM (Md., extinct) and the unnamed coastal county in present Delaware. DURHAM (Md.) and the unnamed county were eliminated. WORCESTER (Md., original), located in present Delaware and Pennsylvania, never became operational. (Archives of Md., 5:107-110)
12 Sep 1673
After completing their re-conquest of New York in August 1673, the Dutch created UPLAND (extinct) as one of three countylike courts that became original counties in Delaware; no inland limits specified. UPLAND included territory in present Delaware and Pennsylvania, and overlapped part of WORCESTER (Md., original, extinct). (Docs. of N.Y., 12:507-508; George, Nead, and McCamant, 453-454; Reed, 22)
13 Nov 1685
King James II approved the decision of the Committee for Trade and Plantations, which concluded the area of present Delaware belonged to Pennsylvania, not Maryland; WORCESTER (Md., original) eliminated. (Lunt, 47; Report on the Resurvey, 145; Van Zandt, 81)