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List of counties in Maryland facts for kids

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Quick facts for kids
Independent city and counties of Maryland
Map of maryland counties.jpg
Location State of Maryland
Number 23 counties and 1 Independent city
Populations (Counties only): 19,303 (Kent) – 1,058,474 (Montgomery)
Areas (Counties only): 254 square miles (660 km2) (Howard) – 983 square miles (2,550 km2) (Dorchester)
Government County government
Subdivisions (Counties): cities, towns, unincorporated communities, census designated place
(Independent city): Neighborhoods

There are 23 counties and one independent city in the U.S. state of Maryland. Though formally an independent city rather than a county, the City of Baltimore is considered the equal of a county for most purposes and is functionally a county-equivalent in most respects. Many of the counties in Maryland were named for relatives of the Barons Baltimore, who were the proprietors of the Maryland colony from its founding in 1634 through 1771. The Barons Baltimore were Catholic, and George Calvert, 1st Baron Baltimore, originally intended that the colony be a haven for English Catholics, though for most of its history Maryland has had a majority of Protestants.

History

The last new county formation in Maryland occurred when Garrett County was formed in 1872 from portions of Allegany County. However, there have been numerous changes to county borders since that time, most recently when portions of the city of Takoma Park that had previously been part of Prince George's County were absorbed into Montgomery County in 1997.

Outside Baltimore (which is an independent city) the county is the default unit of local government. Under Maryland law, counties exercise powers reserved in most other states at the municipal or state levels, so there is little incentive for a community to incorporate. Many of the state's most populous and economically important communities, such as Bethesda, Silver Spring, Columbia, and Towson are unincorporated and receive their municipal services from the county. In fact, there are no incorporated municipalities at all in Baltimore County or Howard County. The county-equivalent is also the provider of public schools—school districts as a separate level of government do not exist in Maryland.

The City of Baltimore generally possesses the same powers and responsibilities as the counties within the state. It is an entity nearly surrounded by but separate from the County of Baltimore, which has its county seat in Towson.

The Federal Information Processing Standard (FIPS) code, which is used by the United States government to uniquely identify states and counties, is provided with each entry. Maryland's code is 24, which when combined with any county code would be written as 24XXX. The FIPS code for each county links to census data for that county.

List of counties

County
FIPS code County seat Est. Origin Etymology Flag
Seal
Population Area Map
Allegany County 001 Cumberland 1789 Formed from part of Washington County From Lenape oolikhanna, which means "beautiful stream" Flag of Allegany County, Maryland.png Seal of Allegany County, Maryland.png &&&&&&&&&&067273.&&&&&067,273 &&&&&&&&&&&&0430.&&&&&0430 sq mi
(&&&&&&&&&&&01114.&&&&&01,114 km2)
State map highlighting Allegany County
Anne Arundel County 003 Annapolis 1650 Formed from part of St. Mary's County Anne Arundell was the maiden name of the wife of Cecil Calvert, 2nd Baron Baltimore. Between 1654 and 1658 it was known as Providence County by Puritan settlers Flag of Anne Arundel County, Maryland.svg Seal of Anne Arundel County, Maryland.svg &&&&&&&&&0594582.&&&&&0594,582 &&&&&&&&&&&&0588.&&&&&0588 sq mi
(&&&&&&&&&&&01523.&&&&&01,523 km2)
State map highlighting Anne Arundel County
Baltimore County 005 Towson 1659 Formed from unorganized territory Cecil Calvert, 2nd Baron Baltimore, first proprietor of the Maryland colony Flag of Baltimore County, Maryland.svg Seal of Baltimore County, Maryland.svg &&&&&&&&&0844703.&&&&&0844,703 &&&&&&&&&&&&0682.&&&&&0682 sq mi
(&&&&&&&&&&&01766.&&&&&01,766 km2)
State map highlighting Baltimore County
Baltimore City 510 Baltimore City 1851 Founded in 1729. Detached in 1851 from Baltimore County Cecil Calvert, 2nd Baron Baltimore, first proprietor of the Maryland colony Flag of Baltimore, Maryland.svg Seal of Baltimore, Maryland.svg &&&&&&&&&0565239.&&&&&0565,239 &&&&&&&&&&&&&092.&&&&&092 sq mi
(&&&&&&&&&&&&0238.&&&&&0238 km2)
State map highlighting Baltimore City
Calvert County 009 Prince Frederick 1654 Formed as Patuxent County from unorganized territory. Renamed Calvert County in 1658 The Calvert family; prior to 1658 it was called Patuxent County, after the Patuxent Indians, a branch of the Algonquians Flag of Calvert County, MD.svg Seal of Calvert County, Maryland.png &&&&&&&&&&094728.&&&&&094,728 &&&&&&&&&&&&0345.&&&&&0345 sq mi
(&&&&&&&&&&&&0894.&&&&&0894 km2)
State map highlighting Calvert County
Caroline County 011 Denton 1773 From parts of Dorchester County and Queen Anne's County Lady Caroline Eden, daughter of Charles Calvert, 5th Baron Baltimore Flag of Caroline County, Maryland.svg Seal of Caroline County, Maryland.svg &&&&&&&&&&033593.&&&&&033,593 &&&&&&&&&&&&0326.&&&&&0326 sq mi
(&&&&&&&&&&&&0844.&&&&&0844 km2)
State map highlighting Caroline County
Carroll County 013 Westminster 1837 From parts of Baltimore County and Frederick County Charles Carroll of Carrollton, a representative to the Continental Congress and signatory of the Declaration of Independence Flag of Carroll County, Maryland.png Seal of Carroll County, Maryland.png &&&&&&&&&0176639.&&&&&0176,639 &&&&&&&&&&&&0452.&&&&&0452 sq mi
(&&&&&&&&&&&01171.&&&&&01,171 km2)
State map highlighting Carroll County
Cecil County 015 Elkton 1674 From parts of Baltimore County and Kent County Cecil is an Anglicized form of the first name of Cecil Calvert, 2nd Baron Baltimore Flag of Cecil County, Maryland.png Seal of Cecil County, Maryland.png &&&&&&&&&0105672.&&&&&0105,672 &&&&&&&&&&&&0418.&&&&&0418 sq mi
(&&&&&&&&&&&01083.&&&&&01,083 km2)
State map highlighting Cecil County
Charles County 017 La Plata 1658 From unorganized territory Charles Calvert, 3rd Baron Baltimore, second proprietor of the Maryland colony Flag of Charles County, Maryland.svg Seal of Charles County, Maryland.svg &&&&&&&&&0171973.&&&&&0171,973 &&&&&&&&&&&&0643.&&&&&0643 sq mi
(&&&&&&&&&&&01665.&&&&&01,665 km2)
State map highlighting Charles County
Dorchester County 019 Cambridge 1668 From unorganized territory Dorchester in Dorset, England; the Earl of Dorset was a friend of the Calvert family Flag of Dochester County, Maryland.png Seal of Dorchester County, Maryland.png &&&&&&&&&&032879.&&&&&032,879 &&&&&&&&&&&&0983.&&&&&0983 sq mi
(&&&&&&&&&&&02546.&&&&&02,546 km2)
State map highlighting Dorchester County
Frederick County 021 Frederick 1748 From part of Prince George's County Frederick Calvert, 6th Baron Baltimore, final proprietor of the Maryland colony 2023 flag of Frederick County, Maryland.svg Seal of Frederick County, Maryland.png &&&&&&&&&0293391.&&&&&0293,391 &&&&&&&&&&&&0667.&&&&&0667 sq mi
(&&&&&&&&&&&01728.&&&&&01,728 km2)
State map highlighting Frederick County
Garrett County 023 Oakland 1872 From part of Allegany County John Work Garrett, president of the Baltimore and Ohio Railroad Flag of Garrett County, Maryland.svg Seal of Garrett County, Maryland.svg &&&&&&&&&&028423.&&&&&028,423 &&&&&&&&&&&&0656.&&&&&0656 sq mi
(&&&&&&&&&&&01699.&&&&&01,699 km2)
State map highlighting Garrett County
Harford County 025 Bel Air 1773 From part of Baltimore County Henry Harford, illegitimate son of Frederick Calvert, 6th Baron Baltimore Flag of Harford County, Maryland.png Seal of Harford County, Maryland.svg &&&&&&&&&0264644.&&&&&0264,644 &&&&&&&&&&&&0527.&&&&&0527 sq mi
(&&&&&&&&&&&01365.&&&&&01,365 km2)
State map highlighting Harford County
Howard County 027 Ellicott City 1851 From parts of Anne Arundel County and Baltimore County John Eager Howard, an American Revolutionary War officer and governor of Maryland Flag of Howard County, Maryland.svg Seal of Howard County, Maryland.png &&&&&&&&&0336001.&&&&&0336,001 &&&&&&&&&&&&0254.&&&&&0254 sq mi
(&&&&&&&&&&&&0658.&&&&&0658 km2)
State map highlighting Howard County
Kent County 029 Chestertown 1642 From unorganized territory The English county of Kent Flag of Kent County, Maryland.gif Seal of Kent County, Maryland.gif &&&&&&&&&&019303.&&&&&019,303 &&&&&&&&&&&&0414.&&&&&0414 sq mi
(&&&&&&&&&&&01072.&&&&&01,072 km2)
State map highlighting Kent County
Montgomery County 031 Rockville 1776 From part of Frederick County Richard Montgomery, an American Revolutionary War general Flag of Montgomery County, Maryland.svg Seal of Montgomery County, Maryland.svg &&&&&&&&01058474.&&&&&01,058,474 &&&&&&&&&&&&0507.&&&&&0507 sq mi
(&&&&&&&&&&&01313.&&&&&01,313 km2)
State map highlighting Montgomery County
Prince George's County 033 Upper Marlboro 1696 From parts of Calvert County and Charles County Prince George of Denmark, the husband of Queen Anne of Great Britain Flag of Prince George's County, Maryland (1963–present).svg Seal of Prince George's County, Maryland.svg &&&&&&&&&0947430.&&&&&0947,430 &&&&&&&&&&&&0498.&&&&&0498 sq mi
(&&&&&&&&&&&01290.&&&&&01,290 km2)
State map highlighting Prince George's County
Queen Anne's County 035 Centreville 1706 From parts of Talbot County Anne, Queen of Great Britain Flag of Queen Anne's County, Maryland.gif Seal of Queen Anne's County, Maryland.png &&&&&&&&&&052508.&&&&&052,508 &&&&&&&&&&&&0510.&&&&&0510 sq mi
(&&&&&&&&&&&01321.&&&&&01,321 km2)
State map highlighting Queen Anne's County
Somerset County 039 Princess Anne 1666 From unorganized territory. Mary, Lady Somerset, sister-in-law of Cecil Calvert, 2nd Baron Baltimore Flag of Somerset County, Maryland.svg Seal of Somerset County, Maryland.png &&&&&&&&&&024910.&&&&&024,910 &&&&&&&&&&&&0611.&&&&&0611 sq mi
(&&&&&&&&&&&01582.&&&&&01,582 km2)
State map highlighting Somerset County
St. Mary's County 037 Leonardtown 1637 From unorganized territory. Was named Potomac County between 1654 and 1658. The Virgin Mary, first county named in a colony intended to be a haven for Catholics Flag of St. Mary's County, Maryland.png Seal of St. Mary's County, Maryland.png &&&&&&&&&0115281.&&&&&0115,281 &&&&&&&&&&&&0611.&&&&&0611 sq mi
(&&&&&&&&&&&01582.&&&&&01,582 km2)
State map highlighting St. Mary's County
Talbot County 041 Easton 1662 From part of Kent County Grace, Lady Talbot, sister of Cecil Calvert, 2nd Baron Baltimore Flag of Talbot County, Maryland.svg Seal of Talbot County, Maryland.png &&&&&&&&&&037823.&&&&&037,823 &&&&&&&&&&&&0477.&&&&&0477 sq mi
(&&&&&&&&&&&01235.&&&&&01,235 km2)
State map highlighting Talbot County
Washington County 043 Hagerstown 1776 From part of Frederick County George Washington, first President of the United States None Seal of Washington County, Maryland (1950–1988).png &&&&&&&&&0155813.&&&&&0155,813 &&&&&&&&&&&&0468.&&&&&0468 sq mi
(&&&&&&&&&&&01212.&&&&&01,212 km2)
State map highlighting Washington County
Wicomico County 045 Salisbury 1867 From parts of Somerset County and Worcester County The Wicomico River; in Lenape, wicko mekee indicated "a place where houses are built", possibly in reference to a settlement Flag of Wicomico County, Maryland.gif Seal of Wicomico County, Maryland.png &&&&&&&&&0104800.&&&&&0104,800 &&&&&&&&&&&&0400.&&&&&0400 sq mi
(&&&&&&&&&&&01036.&&&&&01,036 km2)
State map highlighting Wicomico County
Worcester County 047 Snow Hill 1742 From part of Somerset County Mary Arundell, the wife of Sir John Somerset, son of Henry Somerset, 1st Marquess of Worcester, and sister of Anne Arundell, the wife of Cecil Calvert, 2nd Baron Baltimore Flag of Worcester County, Maryland.svg Seal of Worcester County, Maryland.png &&&&&&&&&&054171.&&&&&054,171 &&&&&&&&&&&&0695.&&&&&0695 sq mi
(&&&&&&&&&&&01800.&&&&&01,800 km2)
State map highlighting Worcester County

Defunct counties

County Years of existence Etymology
Old Charles County 1650–1654 King Charles I of England
Durham County 1669–1672 The English County Durham
Old Worcester County 1672–1685 Mary Arundell, the wife of Sir John Somerset, son of the 1st Marquess of Worcester,
and sister of Anne Arundell, wife of Cecil Calvert, 2nd Baron Baltimore

See also

Kids robot.svg In Spanish: Anexo:Condados de Maryland para niños

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