List of counties in Maryland
Wikimedia list article
There are twenty-four counties and Baltimore City in the U.S. state of Maryland. Though an independent city rather than a county, the City of Baltimore by some is considered the equal of a county for most purposes and is a county-equivalent.
||FIPS code||County seat||Established||Origin||Meaning of name||Population||Area||Map|
|Allegany County||001||Cumberland||1789||Formed from part of Washington County.||From the Lenape Indian word oolikhanna, which means "beautiful stream"||75,087||430 sq mi
|Anne Arundel County||003||Annapolis||1650||Formed from part of St. Mary's County.||Anne Arundell was the maiden name of the wife of Cæcilius Calvert, 2nd Baron Baltimore. Between 1654 and 1658 it was known as Providence County by Puritan settlers||537,656||588 sq mi
|Baltimore County||005||Towson||1659||Formed from unorganized territory||Cæcilius Calvert, 2nd Baron Baltimore, first proprietor of the Maryland colony||805,029||682 sq mi
|Baltimore City||510||Baltimore City||1851||Founded in 1729. Detached in 1851 from Baltimore County||Cæcilius Calvert, 2nd Baron Baltimore, first proprietor of the Maryland colony||620,961||92 sq mi
|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||88,737||345 sq mi
|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||33,066||326 sq mi
|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||167,134||452 sq mi
|Cecil County||015||Elkton||1672||From parts of Baltimore County and Kent County||Cecil is an Anglicized form of the first name of Cæcilius Calvert, 2nd Baron Baltimore||101,108||418 sq mi
|Charles County||017||La Plata||1658||From unorganized territory||Charles Calvert, 3rd Baron Baltimore, second proprietor of the Maryland colony||146,551||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||983 sq mi
|Frederick County||021||Frederick||1748||From part of Prince George's County||Frederick Calvert, 6th Baron Baltimore, final proprietor of the Maryland colony||233,385||667 sq mi
|Garrett County||023||Oakland||1872||From part of Allegany County||John Work Garrett, president of the Baltimore and Ohio Railroad||30,097||656 sq mi
|Harford County||025||Bel Air||1773||From part of Baltimore County||Henry Harford, illegitimate son of Frederick Calvert, 6th Baron Baltimore||244,826||527 sq mi
|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||287,085||254 sq mi
|Kent County||029||Chestertown||1642||From unorganized territory||The English county of Kent||20,197||414 sq mi
|Montgomery County||031||Rockville||1776||From part of Frederick County||Richard Montgomery, an American Revolutionary War general||1,058,810||507 sq mi
|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||863,420||498 sq mi
|Queen Anne's County||035||Centreville||1706||From parts of Talbot County||Anne, Queen of Great Britain||47,798||510 sq mi
|Saint 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||105,151||611 sq mi
|Somerset County||039||Princess Anne||1666||From unorganized territory.||Mary, Lady Somerset, sister-in-law of Cæcilius Calvert, 2nd Baron Baltimore||26,470||611 sq mi
|Talbot County||041||Easton||1662||From part of Kent County||Grace, Lady Talbot, sister of Cæcilius Calvert, 2nd Baron Baltimore||37,782||477 sq mi
|Washington County||043||Hagerstown||1776||From part of Frederick County||George Washington, first President of the United States||147,430||468 sq mi
|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||98,733||400 sq mi
|Worcester County||047||Snow Hill||1742||From part of Somerset County||Mary Arundell, the wife of Sir John Somerset, son of the 1st Marquess of Worcester, and sister of Anne Arundell, the wife of Cæcilius Calvert, 2nd Baron Baltimore||51,454||695 sq mi
|County||Years of existence||Etymology|
|Old Charles County||1650–1654||Charles I, King 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 Cæcilius Calvert, 2nd Baron Baltimore
- "EPA County FIPS Code Listing". EPA.gov. Retrieved 2008-02-23.
- "Counties". Maryland Manual Online. Retrieved 2007-06-24.
- National Association of Counties. "NACo - Find a county". Archived from the original on 2007-10-25. Retrieved 2008-04-30.
- Bureau, U. S. Census. "American FactFinder". factfinder.census.gov. Archived from the original on 2015-01-08. Retrieved 2019-02-14.
- "Maryland QuickFacts". U.S. Census Bureau. Archived from the original on 2016-02-17. Retrieved 2007-06-22.