Maryland: Individual County Chronologies

Maryland 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


ALLEGANY

29 Dec 1789
ALLEGANY created from WASHINGTON. (Md. Laws 1789, Nov. sess., ch. 19)
04 Dec 1872
ALLEGANY lost to creation of GARRETT. As demarcated at the time (and mapped here), the ALLEGANY-GARRETT boundary was run too far west, making GARRETT smaller than it would have been if the legal boundary description had been observed. Despite considerable controversy and numerous attempts to move this line, through long observance the original survey line became the effective, legal boundary. (Md. Laws 1872, ch. 212, secs. 1-2/pp. 313-314; Md. Atty. Gen.)

ANNE ARUNDEL

29 Apr 1650
ANNE ARUNDEL created from ST. MARYS. The county was centered on the settlement of Providence, but territorial limits were not otherwise specified. (Archives of Md., 1:292)
03 Jul 1654
ANNE ARUNDEL lost to creation of CALVERT; boundaries are estimated. (Archives of Md., 3:308)
20 Oct 1654
ANNE ARUNDEL renamed PROVIDENCE; PROVIDENCE gained from PATUXENT (now CALVERT). (Archives of Md., 1:341, 345, 347)
24 Mar 1658
[24 March 1657/1658] PROVIDENCE renamed ANNE ARUNDEL. (Archives of Md., 1:369)
by 12 Jan 1660
[by 12 January 1659/1660] ANNE ARUNDEL lost to creation of BALTIMORE. (Archives of Md., 1:381)
06 Jun 1674
ANNE ARUNDEL gained from CALVERT and non-county area. Boundary between ANNE ARUNDEL and BALTIMORE was redefined [no change]. (Archives of Md., 15:39)
03 Apr 1698
ANNE ARUNDEL exchanged with BALTIMORE. (Archives of Md., 22:147)
31 May 1727
ANNE ARUNDEL gained from BALTIMORE. (Archives of Md., 36:595)
24 Feb 1824
ANNE ARUNDEL lost to CALVERT. (Md. Laws 1823, ch. 183, sec. 1/pp. 125-126)
18 Feb 1825
Boundary between ANNE ARUNDEL and CALVERT was clarified [no change]. (Md. Laws 1824, ch. 193/p. 147)
04 Jul 1851
ANNE ARUNDEL lost to creation of HOWARD. (Md. Laws 1838, ch. 22, secs. 1, 4; Swindler, 4:413)
29 Mar 1918
ANNE ARUNDEL lost to Baltimore City (Ind. City). (Md. Laws 1918, ch. 82, sec. 1/p. 135)

Baltimore City

04 Jul 1851
Baltimore City became an independent city, separate from BALTIMORE County. (Swindler, 4:399-410
01 Jun 1888
Baltimore City (Ind. City) gained from BALTIMORE. (Md. Laws 1888, ch. 98, secs. 1-4/pp. 113-117)
29 Mar 1918
Baltimore City (Ind. City) gained from ANNE ARUNDEL and BALTIMORE. (Md. Laws 1918, ch. 82, sec. 1/p. 135)

BALTIMORE

by 12 Jan 1660
[by 12 January 1659/1660] BALTIMORE was created from ANNE ARUNDEL, KENT, and Non-County Area 1 between ANNE ARUNDEL and KENT. BALTIMORE territorial limits, if any, are unknown and boundaries are estimated. (Archives of Md., 1:381)
by 06 Jun 1674
BALTIMORE lost to creation of CECIL. Boundary between BALTIMORE and ANNE ARUNDEL was redefined [no change]. (Archives of Md., 15:38-39)
03 Apr 1698
BALTIMORE exchanged with ANNE ARUNDEL. (Archives of Md., 22:147)
31 May 1727
BALTIMORE lost to ANNE ARUNDEL. (Archives of Md., 36:595)
02 Jun 1750
BALTIMORE lost to FREDERICK. (Archives of Md., 46:468)
02 Mar 1774
BALTIMORE lost to creation of HARFORD. (Archives of Md., 64:198)
19 Jan 1836
BALTIMORE lost to creation of CARROLL. (Md. Laws 1835, ch. 256, sec. 1; Md. Laws 1836, ch. 19)
04 Jul 1851
BALTIMORE lost to creation of the independent city of Baltimore City, which was separate from BALTIMORE County. (Md. Laws 1838, ch. 22, secs. 1, 4; Swindler, 4:413)
01 Jun 1888
BALTIMORE lost to Baltimore City (Ind. City). (Md. Laws 1888, ch. 98, secs. 1-4/pp. 113-117)
29 Mar 1918
BALTIMORE lost to Baltimore City (Ind. City). (Md. Laws 1918, ch. 82, sec. 1/p. 135)

CALVERT

03 Jul 1654
CALVERT created from ANNE ARUNDEL and CHARLES (original, extinct); CHARLES (original) eliminated. CALVERT boundaries are estimated. (Archives of Md., 3:308)
20 Oct 1654
CALVERT renamed PATUXENT; PATUXENT lost to PROVIDENCE (now ANNE ARUNDEL). (Archives of Md., 1:341, 345, 347)
24 Mar 1658
[24 March 1657/1658] PATUXENT renamed CALVERT. (Archives of Md., 1:369)
06 Jun 1674
CALVERT lost to ANNE ARUNDEL. (Archives of Md., 15:39)
23 Apr 1696
CALVERT lost to CHARLES and ST. MARYS, and lost to creation of PRINCE GEORGES. (Archives of Md., 19:213, 214)
24 Feb 1824
CALVERT gained from ANNE ARUNDEL. (Md. Laws 1823, ch. 183, sec. 1/pp. 125-126)
18 Feb 1825
Boundary between CALVERT and ANNE ARUNDEL was clarified [no change]. (Md. Laws 1824, ch. 193/p. 147)

CAROLINE

15 Mar 1774
CAROLINE created from DORCHESTER and QUEEN ANNES. (Archives of Md., 64:209)
22 Dec 1792
Boundary between CAROLINE and DORCHESTER was adjusted [not mapped]. (Md. Laws 1792, Nov. sess., ch. 19)
17 Feb 1826
Boundary between CAROLINE and DORCHESTER was adjusted to accommodate local property owner [not mapped]. (Md. Laws 1825, ch. 81, sec. 1/p. 61)
01 Apr 1878
Boundary between CAROLINE and DORCHESTER was adjusted [not mapped]. (Md. Laws 1878, ch. 393, sec. 2/p. 607)
11 Nov 1880
CAROLINE gained part of town of Federalsburg from DORCHESTER, placing the entire town in CAROLINE. (Md. Laws 1880, ch. 208, sec. 1/pp. 332-334; Md. Gov.)

CARROLL

19 Jan 1836
CARROLL created from BALTIMORE and FREDERICK. (Md. Laws 1835, ch. 256, sec. 1; Md. Laws 1836, ch. 19)

CECIL

by 06 Jun 1674
CECIL was created from BALTIMORE and KENT. (Archives of Md., 15:38-39)
19 Jun 1674
CECIL lost to KENT; boundary is estimated. (Archives of Md., 15:41)
01 May 1707
CECIL lost to KENT. (Archives of Md., 26:621)

CHARLES (original, extinct)

21 Nov 1650
CHARLES (original, extinct) created from ST. MARYS; boundaries are estimated. (Archives of Md., 3:259-260)
03 Jul 1654
CHARLES (original, extinct) lost all territory to creation of CALVERT; CHARLES (original) eliminated. (Archives of Md., 3:308)

CHARLES

13 Apr 1658
CHARLES created from ST. MARYS; territorial limits not specified, and boundaries are estimated. (Archives of Md., 1:381, 3:341)
23 Apr 1696
CHARLES gained from CALVERT, lost to creation of PRINCE GEORGES. (Archives of Md., 19:213, 214)
10 Dec 1748
CHARLES gained from PRINCE GEORGES. (Archives of Md., 46:141-142)

DORCHESTER

by 16 Feb 1669
[by 16 February 1668/1669] DORCHESTER was created from Non-County Area 2 between SOMERSET and TALBOT. DORCHESTER territorial limits, if any, are unknown; boundaries were partially defined 6 May 1669. (Archives of Md., 2:155)
06 May 1669
DORCHESTER territorial limits were partially defined [no change]. (Archives of Md., 5:54)
04 Oct 1684
Boundary between DORCHESTER and SOMERSET was clarified [no change]. (Archives of Md., 17:286-287)
01 May 1707
DORCHESTER lost to creation of QUEEN ANNES. (Archives of Md., 26:621)
02 Jun 1750
DORCHESTER boundaries were clarified [no change]. (Archives of Md., 46:468)
15 Mar 1774
DORCHESTER lost to creation of CAROLINE. (Archives of Md., 64:209)
22 Dec 1792
Boundary between DORCHESTER and CAROLINE was adjusted [not mapped]. (Md. Laws 1792, Nov. sess., ch. 19)
17 Feb 1826
Boundary between DORCHESTER and CAROLINE was adjusted to accommodate local property owner [not mapped]. (Md. Laws 1825, ch. 81, sec. 1/p. 61)
01 Apr 1878
Boundary between DORCHESTER and CAROLINE was adjusted [not mapped]. (Md. Laws 1878, ch. 393, sec. 2/p. 607)
11 Nov 1880
DORCHESTER lost town of Federalsburg to CAROLINE, placing the entire town in CAROLINE. (Md. Laws 1880, ch. 208, sec. 1/pp. 332-334; Md. Gov.)

DURHAM (extinct)

22 Oct 1669
Maryland implicitly asserted its claim to the area of present Delaware (then controlled by New York) by creating DURHAM (extinct) from SOMERSET and non-county area along the Atlantic Coast; DURHAM was located in present Delaware and Pennsylvania, and was never operational. (Archives of Md., 5:56-57)
19 Jun 1672
DURHAM (extinct) lost all territory to creation of WORCESTER (original, extinct); DURHAM eliminated. (Archives of Md., 5:107-110)

FREDERICK

10 Dec 1748
FREDERICK created from PRINCE GEORGES and Non-County Area 1. (Archives of Md., 46:141-142)
02 Jun 1750
FREDERICK gained from BALTIMORE. (Archives of Md., 46:468)
02 Oct 1776
FREDERICK lost to creation of MONTGOMERY and WASHINGTON. (Md., Laws Since 1763, "Proceedings of Convention," 6 Sep. 1776)
19 Jan 1836
FREDERICK lost to creation of CARROLL. (Md. Laws 1835, ch. 256, sec. 1; Md. Laws 1836, ch. 19)

GARRETT

04 Dec 1872
GARRETT created from ALLEGANY. As demarcated at the time (and mapped here), the ALLEGANY-GARRETT boundary was run too far west, making GARRETT smaller than it would have been if the legal boundary description was observed. Despite considerable controversy and numerous attempts to move this line to the course originally prescribed, through long observance the original survey line became the effective, legal boundary. (Md. Laws 1872, ch. 212, secs. 1-2/pp. 313-314; Md. Atty. Gen.)

HARFORD

02 Mar 1774
HARFORD created from BALTIMORE. (Archives of Md., 64:198)

HOWARD

04 Jul 1851
HOWARD created from Howard District of ANNE ARUNDEL. (Md. Laws 1838, ch. 22, secs. 1, 4; Swindler, 4:413)

KENT

by 02 Aug 1642
KENT was created from ST. MARYS to serve the east side of Chesapeake Bay; territorial limits were not specified, and boundaries are estimated. (Archives of Md., 3:105)
24 Sep 1657
KENT boundaries redefined to include Poplar Island [no change]. (Archives of Md., 1:361)
by 12 Jan 1660
[by 12 January 1659/1660] KENT lost to creation of BALTIMORE. (Archives of Md., 1:381)
by 18 Feb 1662
[by 18 February 1661/1662] KENT lost to creation of TALBOT. (Archives of Md., 1:425)
04 Jun 1671
KENT gained from TALBOT; boundaries are estimated. (Hanson, 221-222)
by 06 Jun 1674
KENT lost to creation of CECIL. (Archives of Md., 15:38-39)
19 Jun 1674
KENT gained from CECIL, boundary is estimated. (Archives of Md., 15:41)
23 Apr 1696
KENT exchanged with TALBOT. (Archives of Md., 19:213, 214)
01 May 1707
KENT gained from CECIL, lost to creation of QUEEN ANNES. (Archives of Md., 26:621)

MONTGOMERY

02 Oct 1776
MONTGOMERY created from FREDERICK. (Md., Laws Since 1763, "Proceedings of Convention," 6 Sep. 1776)
30 Mar 1791
The United States created an unnamed district from land ceded by Maryland and Virginia to be the seat of national government. The district was a square with each corner at a point of the compass and each side ten miles long. MONTGOMERY continued county functions of Maryland in the ceded area. (Richardson, 1:102; Van Zandt, 90)
27 Feb 1801
MONTGOMERY lost to creation of WASHINGTON (D.C., extinct) when the federal government established a circuit court for the seat of national government (now called the District of Columbia) and created two counties to administer judicial and administrative functions; MONTGOMERY eliminated from the District of Columbia. (U.S. Stat., vol. 2, ch. 15 [1801]/pp. 103-108; Bryan, 1:400-401)
01 Jul 1997
MONTGOMERY gained Takoma Park city from PRINCE GEORGES. (U.S. Census Bureau, "Significant Changes to Counties and County Equivalent Entities: 1970-Present," http://www.gov/geo/www/tiger/ctychng.html)

Non-County Area 1

24 Jan 1638
Non-County Area 1 created from all that part of present Maryland outside of ST. MARYS. (Archives of Md., 3:60)
12 Jan 1660
Non-County Area 1 lost to creation of BALTIMORE and Non-County Area 2. (Archives of Md., 1:381)
06 Jun 1674
Non-County Area 1 lost to ANNE ARUNDEL. (Archives of Md., 15:39)
23 Apr 1696
Non-County Area 1 lost to creation of PRINCE GEORGES. (Archives of Md., 19:213, 214)
10 Dec 1748
Non-County Area 1 lost to creation of FREDERICK; Non-County Area 1 eliminated. (Archives of Md., 46:141-142)

Non-County Area 2

12 Jan 1660
Non-County Area 2 created from Non-County Area 1. (Archives of Md., 1:381)
18 Feb 1662
Non-County Area 2 lost to creation of TALBOT. (Archives of Md., 1:425)
22 Aug 1666
Non-County Area 2 lost to creation of SOMERSET. (Archives of Md., 3:553-555)
16 Feb 1669
Non-County Area 2 lost to creation of DORCHESTER; Non-County Area 2 eliminated. (Archives of Md., 2:155)

Non-County Area 3

22 Oct 1669
Non-County Area 3 created from SOMERSET when SOMERSET lost to creation of an unnamed county in Maryland and present southern Delaware, which never became operational. (Archives of Md., 5:56-57)

PATUXENT (see CALVERT)


POTOMAC (see ST. MARYS)


PRINCE GEORGES

23 Apr 1696
PRINCE GEORGES created from CALVERT, CHARLES, and Non-County Area 1. (Archives of Md., 19:213, 214)
10 Dec 1748
PRINCE GEORGES lost to CHARLES and to creation of FREDERICK. (Archives of Md., 46:141-142)
30 Mar 1791
The United States created an unnamed district from land ceded by Maryland and Virginia to be the seat of national government. The district was a square with each corner at a point of the compass and each side ten miles long. PRINCE GEORGES continued county functions of Maryland in the ceded area. (Richardson, 1:102; Van Zandt, 90)
27 Feb 1801
PRINCE GEORGES lost to creation of WASHINGTON (D.C., extinct) when the federal government established a circuit court for the seat of national government (now called the District of Columbia) and created two counties to administer judicial and administrative functions; PRINCE GEORGES eliminated from the District of Columbia. (U.S. Stat., vol. 2, ch. 15 [1801]/pp. 103-108; Bryan, 1:400-401)
01 Jul 1997
PRINCE GEORGES lost Takoma Park city to MONTGOMERY. (U.S. Census Bureau, "Significant Changes to Counties and County Equivalent Entities: 1970-Present," http://www.gov/geo/www/tiger/ctychng.html)

PROVIDENCE (see ANNE ARUNDEL)


QUEEN ANNES

01 May 1707
QUEEN ANNES created from DORCHESTER, KENT, and TALBOT. (Archives of Md., 26:621)
15 Mar 1774
QUEEN ANNES lost to creation of CAROLINE. (Archives of Md., 64:209)

ST. MARYS

by 24 Jan 1638
[by 24 January 1637/1638] ST. MARYS was created as the first county in Maryland. ST. MARYS was meant to serve the entire colony; territorial limits, if any, are unknown, and boundaries are estimated. (Archives of Md., 3:60)
by 02 Aug 1642
ST. MARYS lost to creation of KENT; boundaries are estimated. (Archives of Md., 3:105)
29 Apr 1650
ST. MARYS lost to creation of ANNE ARUNDEL. (Archives of Md., 1:292)
21 Nov 1650
ST. MARYS lost to creation of CHARLES (original, extinct). (Archives of Md., 3:259-260)
20 Oct 1654
ST. MARYS renamed POTOMAC. (Archives of Md., 1:341, 345, 347)
24 Mar 1658
[24 March 1657/1658] POTOMAC renamed ST. MARYS. (Archives of Md., 1:369)
13 Apr 1658
ST. MARYS lost to creation of CHARLES. (Archives of Md., 1:381, 3:341)
23 Apr 1696
ST. MARYS gained from CALVERT. (Archives of Md., 19:213, 214)

SOMERSET

22 Aug 1666
SOMERSET created from Non-County Area 2 south of TALBOT. 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. (Archives of Md., 3:553-555)
22 Oct 1669
SOMERSET lost to creation of an unnamed county located in Maryland and present southern Delaware, and to creation of DURHAM (extinct). These counties never became operational. (Archives of Md., 5:56-57)
04 Oct 1684
Boundary between SOMERSET and DORCHESTER was clarified [no change]. (Archives of Md., 17:286-287)
13 Nov 1685
King James II approved the decision of the Committee for Trade and Plantations (7 November 1685) settling the rival claims of Maryland and Pennsylvania to Pennsylvania's Lower Counties, now Delaware. Where the boundary should run was not settled until 1760. SOMERSET implicitly regained area along the Atlantic coast between Delaware and Virginia, and lost to SUSSEX (Del.). (Lunt, 47; Report on the Resurvey, 145; Van Zandt, 81)
10 Dec 1742
SOMERSET lost to creation of WORCESTER. (Archives of Md., 42:428, 657)
02 Jun 1750
SOMERSET boundaries were clarified [no change]. (Archives of Md., 46:468)
05 Oct 1867
SOMERSET lost to creation of WICOMICO. (Swindler, 4:476, 479)
03 Mar 1879
SOMERSET lost a small part of Smith's Island to ACCOMACK (Va.) when the United States approved the Maryland-Virginia boundary down the south side of the Potomac River and across Chesapeake Bay [not mapped]. (Paullin, 85; Van Zandt, 87)

TALBOT

by 18 Feb 1662
[by 18 February 1661/1662] TALBOT was created from KENT and Non-County Area 2; TALBOT territorial limits, if any, are unknown, and boundaries are estimated. (Archives of Md., 1:425)
04 Jun 1671
TALBOT lost to KENT; boundaries are estimated. (Hanson, 221-222)
23 Apr 1696
TALBOT exchanged with KENT. (Archives of Md., 19:213, 214)
01 May 1707
TALBOT lost to creation of QUEEN ANNES. (Archives of Md., 26:621)

WASHINGTON

02 Oct 1776
WASHINGTON created from FREDERICK. (Md., Laws Since 1763, "Proceedings of Convention," 6 Sep. 1776)
29 Dec 1789
WASHINGTON lost to creation of ALLEGANY. (Md. Laws 1789, Nov. sess., ch. 19)

WICOMICO

05 Oct 1867
WICOMICO created from SOMERSET and WORCESTER. (Swindler, 4:476, 479)

WORCESTER (original, extinct)

19 Jun 1672
WORCESTER (original, extinct) created from DURHAM (extinct) and the unnamed coastal county in present Maryland and Delaware. WORCESTER (original) was located in present Delaware and Pennsylvania and never became operational. (Archives of Md., 5:107-110)
13 Nov 1685
King James II approved the decision of the Committee for Trade and Plantations (7 November 1685) settling the rival claims of Maryland and Pennsylvania to Pennsylvania's Lower Counties, now Delaware. The committee concluded that the west side of Delaware Bay was outside the grant to Lord Baltimore. Where the boundary line should run was not settled until 1760; WORCESTER (original) eliminated. (Lunt, 47; Report on the Resurvey, 145; Van Zandt, 81)

WORCESTER

10 Dec 1742
WORCESTER created from SOMERSET. (Archives of Md., 42:428, 657)
02 Jun 1750
WORCESTER boundaries were clarified [no change]. (Archives of Md., 46:468)
05 Oct 1867
WORCESTER lost to creation of WICOMICO. (Swindler, 4:476, 479)