List of counties in Maryland

^Garrett

^Allegany

^Washington

^Frederick

^Carroll

^Baltimore

^Baltimore

^City

^Harford

^Cecil

^Kent

^Queen

^Anne's

^caro-
line

^Talbot

^Dorchester

^Wicomico

^Worcester

^Somerset

^{Saint
Mary’s}

^Charles

^Cal
vert

^{Prince
George
’s}

^Anne
Arundel

^Howard

^Mont
Gomery

The US state of Maryland is divided into 24 counties . The city of Baltimore does not belong to any county, but is included because it performs the same functions in most areas. Many of the counties were named after members of the Order of Baron Baltimore . These owned the colony of Maryland from 1634 to 1771.

The official abbreviation for the State of Maryland is MD and the FIPS code is 24 .

The FIPS code for each individual county always starts with 24 , followed by a three-digit number.

The population figures are based on the 2010 census .

county	FIPS code	Main town ( county seat )	Founded	origin	Origin of name	population	surface	map
Allegany County	001	Cumberland	1789	Formed from Washington County.	From the Lenapi Indian word oolikhanna , stands for "beautiful river"	75,087	1,114 km² ( 430 sq mi)
Anne Arundel County	003	Annapolis	1650	Made up of parts of St. Mary's County.	Anne Arundell was the maiden name of the wife of Cæcilius Calvert, 2nd Baron Baltimore . Between 1654 and 1658 known as Providence County among Puritan settlers ( Providence = "Providence")	537.656	1,523 km² ( 588 sq mi)
Baltimore County	005	Towson	1659	Formed from disorganized territory	Cæcilius Calvert, 2nd Baron Baltimore , first owner of the Maryland colony	805.029	1,766 km² ( 682 sq mi)
Baltimore City	510	Baltimore City	1851	Founded in 1729. No common administration with Baltimore County since 1851	Cæcilius Calvert, 2nd Baron Baltimore , first owner of the Maryland colony	620.961	238 km² ( 92 sq mi)
Calvert County	009	Prince Frederick	1654	Founded as Patuxent County out of disorganized territory, renamed Calvert County in 1658	Calvert is the family name of the Barons of Baltimore	88,737	894 km² ( 345 sq mi)
Caroline County	011	The tone	1773	Dorchester County and Queen Anne's County	Lady Caroline Eden, daughter of Charles Calvert, 5th Baron Baltimore	33,066	844 km² ( 326 sq mi)
Carroll County	013	Westminster	1837	Baltimore County and Frederick County	Charles Carroll of Carrollton , Representative to the Continental Congress and Signatory of the Declaration of Independence	167.134	1,171 km² ( 452 sq mi)
Cecil County	015	Elkton	1672	Baltimore County and Kent County	Cecil is an anglicised name of Cæcilius Calvert, 2nd Baron Baltimore	101.108	1,083 km² ( 418 sq mi)
Charles County	017	La Plata	1658	From unorganized territory	Charles Calvert, 3rd Baron Baltimore ,	146,551	1,665 km² ( 643 sq mi)
Dorchester County	019	Cambridge	1668	From unorganized territory	Dorchester in Dorset , England ; The Earl of Dorset was a friend of the Calvert family	32,618	2,546 km² ( 983 sq mi)
Frederick County	021	Frederick	1748	Prince George's County	Frederick Calvert, 6th Baron Baltimore , last owner of the Maryland colony	233,385	1,728 km² ( 667 sq mi)
Garrett County	023	Oakland	1872	Allegany County	John Work Garrett , President of the Baltimore and Ohio Railroad	30.097	1,699 km² ( 656 sq mi)
Harford County	025	Bel Air	1773	Baltimore County	Henry Harford , illegitimate son of Frederick Calvert, 6th Baron Baltimore	244,826	1,365 km² ( 527 sq mi)
Howard County	027	Ellicott City	1851	Anne Arundel County and Baltimore County	John Eager Howard , Soldier and Governor of Maryland	287.085	658 km² ( 254 sq mi)
Kent County	029	Chestertown	1642	From unorganized territory	Kent in England	20,197	1,072 km² ( 414 sq mi)
Montgomery County	031	Rockville	1776	Taken from Frederick County	Richard Montgomery , General in the War of Independence	971.777	1,313 km² ( 507 sq mi)
Prince George's County	033	Upper Marlboro	1696	Calvert County and Charles County	George of Denmark and Norway , husband of Queen Anne of Great Britain	863.420	1,290 km² ( 498 sq mi)
Queen Anne's County	035	Centerville	1706	Talbot County	Anne Stuart, Queen of Great Britain	47,798	1,321 km² ( 510 sq mi)
Saint Mary's County	037	Leonardtown	1637	From unorganized territory. Was called Potomac County between 1654 and 1658.	Mary the mother of Jesus , first county established in a colony in England, was to become a haven for Catholics	105.151	1,582 km² ( 611 sq mi)
Somerset County	039	Princess Anne	1666	From unorganized territory.	Mary, Lady Somerset, relative of Cæcilius Calvert, 2nd Baron Baltimore	26,470	1,582 km² ( 611 sq mi)
Talbot County	041	Easton	1662	Kent County	Grace, Lady Talbot, sister of Cæcilius Calvert, 2nd Baron Baltimore	37,782	1,235 km² ( 477 sq mi)
Washington County	043	Hagerstown	1776	Frederick County	George Washington , first President of the United States	147,430	1,212 km² ( 468 sq mi)
Wicomico County	045	Salisbury	1867	Somerset County and Worcester County	Wicomico River ; in Lenape , wicko mekee means “a place where houses are built”, ie a settlement	98,733	1,036 km² ( 400 sq mi)
Worcester County	047	Snow Hill	1742	Somerset County	Mary Arundell, the wife of Sir John Somerset, son of the 1st Marquess of Worcester , and sister of Anne Arundell, wife of Cæcilius Calvert, 2nd Baron Baltimore	51,454	1,800 km² ( 695 sq mi)

Individual evidence

1. ↑ FIPS codes of Maryland ( Memento of the original from June 9, 2010 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
2. ↑ EPA County FIPS Code Listing . In: EPA.gov . Retrieved February 23, 2008.
3. ↑ Counties . In: Maryland Manual Online . Retrieved June 24, 2007.
4. ^ ^{A b c} National Association of Counties: NACo - Find a county . Archived from the original on October 25, 2007. Info: The archive link was automatically inserted and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved April 30, 2008. 
5. ↑ ^{a b} Maryland QuickFacts . In: US Census Bureau . Retrieved June 29, 2011.