Creation Dates and Parent Counties of Maryland CountiesEdit This Page

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County
Year
Created

Parent County
Year Split and Child County
Allegany 1789 Washington From it came Garrett Co. in 1872.
Anne Arundel (name changed to Providence in 1654 and changed back in 1658) 1650
St. Mary's
1659, Baltimore County created from; 1674 & 1696 boundary with Baltimore County redfined; 1695, boundaries redefined; 1698, lost more land to Baltimore County; 1727, land from Baltimore County; 1824 & 1825 Calvert County boundary redefined; 1838, Howard district created and in 1851 became a county; 1918, land to Baltimore City.
Baltimore
1659

Anne Arundel
1659 gained land from Kent; 1674 & 1696, Anne Arundel boundary redefined; 1695, boundaries redefined; 1698, gained from Anne Arundel; 1727, lost to Anne Arundel; 1851, Baltimore (independent city) created by county seat stayed there until 1857; 1888 & 1918, lost land to Baltimore City.
Baltimore
(independent city)
1796, incorporated; 1851, became an independent city from Baltimore County
Baltimore County
1888, gained land from Baltimore County; 1918, gained land from Anne Arundel and Baltimore counties.
Calvert (1654, name changed to Patuxent County; 1658, name returned to St. Marys)
1654

St. Mary's
1695, boundaries redefined; 1824 & 1825, boundary with Anne Arundel redefined.
Caroline 1773
Dorchester, Queen Anne's 1792, 1793, 1825, 1826, 1878 Dorchester boundary redefined; 1880, land from Dorchester.
Carroll 1837 Baltimore, Frederick  --
Cecil 1674
Kent 1695 & 1706 boundaries redefined; 1706, gained from Kent.
Charles 1658
St. Mary's
Old St. Charles County existed from 1650 to 1653 and is not the same; 1695, boundaries redefined; 1748, gained from Prince Georges.
Dorchester 1669
 --
 --
Frederick 1748
Baltimore, Prince George's  --
Garrett 1872 Allegany  --
Harford 1773 Baltimore County  --
Howard 1838, created as Howard District with status of a county; 1851, became a county. Anne Arundel
 --
Kent 1642
 --
 --
Montgomery 1776 Frederick  --
Murderkill Hundred Was Motherkill Hundred; in 1867 it became North Murderkill and South Murderkill Hundreds.  --
 --
Patuxent (See Calvert)  --  --
Prince George's 1695 Calvert, Charles  --
Providence (See Anne Arundel)  --  --
Queen Anne's 1706 Talbot  --
Somerset 1666  --  From it came Wicomico in 1867.
St. Mary's 1637  --  --
Talbot 1661/62  --  --
Washington 1776 Frederick  --
Wicomico 1867 Somerset, Worcester  --
Worcester 1742 Worcester From it came Wicomico in 1867.

Extinct or Renamed Counties:
| Murderkill Hundred |


 

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  • This page was last modified on 14 September 2009, at 22:13.
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