Alphabetical Listing
| County |
FIPS code |
County seat |
Established |
Origin |
Etymology |
Population |
Area |
Map |
|---|---|---|---|---|---|---|---|---|
| Allegany County | 001 | Cumberland | 1789 | Formed from part of Washington County. | From the Lenape Indian word oolikhanna, which means "beautiful stream" | 700475087000000000075,087 | 7002430000000000000430 sq mi (70031114000000000001,114 km2) |
|
| 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 | 7005537656000000000537,656 | 7002588000000000000588 sq mi (70031523000000000001,523 km2) |
|
| Baltimore County | 005 | Towson | 1659 | Formed from unorganized territory | Cæcilius Calvert, 2nd Baron Baltimore, first proprietor of the Maryland colony | 7005805029000000000805,029 | 7002682000000000000682 sq mi (70031766000000000001,766 km2) |
|
| 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 | 7005620961000000000620,961 | 700192000000000000092 sq mi (7002238000000000000238 km2) |
|
| 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 | 700488737000000000088,737 | 7002345000000000000345 sq mi (7002894000000000000894 km2) |
|
| 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 | 700433066000000000033,066 | 7002326000000000000326 sq mi (7002844000000000000844 km2) |
|
| 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 | 7005167134000000000167,134 | 7002452000000000000452 sq mi (70031171000000000001,171 km2) |
|
| 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 | 7005101108000000000101,108 | 7002418000000000000418 sq mi (70031083000000000001,083 km2) |
|
| Charles County | 017 | La Plata | 1658 | From unorganized territory | Charles Calvert, 3rd Baron Baltimore, second proprietor of the Maryland colony | 7005146551000000000146,551 | 7002643000000000000643 sq mi (70031665000000000001,665 km2) |
|
| Dorchester County | 019 | Cambridge | 1668 | From unorganized territory | Dorchester in Dorset, England; the Earl of Dorset was a friend of the Calvert family | 700432618000000000032,618 | 7002983000000000000983 sq mi (70032546000000000002,546 km2) |
|
| Frederick County | 021 | Frederick | 1748 | From part of Prince George's County | Frederick Calvert, 6th Baron Baltimore, final proprietor of the Maryland colony | 7005233385000000000233,385 | 7002667000000000000667 sq mi (70031728000000000001,728 km2) |
|
| Garrett County | 023 | Oakland | 1872 | From part of Allegany County | John Work Garrett, president of the Baltimore and Ohio Railroad | 700430097000000000030,097 | 7002656000000000000656 sq mi (70031699000000000001,699 km2) |
|
| Harford County | 025 | Bel Air | 1773 | From part of Baltimore County | Henry Harford, illegitimate son of Frederick Calvert, 6th Baron Baltimore | 7005244826000000000244,826 | 7002527000000000000527 sq mi (70031365000000000001,365 km2) |
|
| 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 | 7005287085000000000287,085 | 7002254000000000000254 sq mi (7002658000000000000658 km2) |
|
| Kent County | 029 | Chestertown | 1642 | From unorganized territory | The English county of Kent | 700420197000000000020,197 | 7002414000000000000414 sq mi (70031072000000000001,072 km2) |
|
| Montgomery County | 031 | Rockville | 1776 | From part of Frederick County | Richard Montgomery, an American Revolutionary War general | 7005971777000000000971,777 | 7002507000000000000507 sq mi (70031313000000000001,313 km2) |
|
| 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 | 7005863420000000000863,420 | 7002498000000000000498 sq mi (70031290000000000001,290 km2) |
|
| Queen Anne's County | 035 | Centreville | 1706 | From parts of Talbot County | Anne, Queen of Great Britain | 700447798000000000047,798 | 7002510000000000000510 sq mi (70031321000000000001,321 km2) |
|
| 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 | 7005105151000000000105,151 | 7002611000000000000611 sq mi (70031582000000000001,582 km2) |
|
| Somerset County | 039 | Princess Anne | 1666 | From unorganized territory. | Mary, Lady Somerset, sister-in-law of Cæcilius Calvert, 2nd Baron Baltimore | 700426470000000000026,470 | 7002611000000000000611 sq mi (70031582000000000001,582 km2) |
|
| Talbot County | 041 | Easton | 1662 | From part of Kent County | Grace, Lady Talbot, sister of Cæcilius Calvert, 2nd Baron Baltimore | 700437782000000000037,782 | 7002477000000000000477 sq mi (70031235000000000001,235 km2) |
|
| Washington County | 043 | Hagerstown | 1776 | From part of Frederick County | George Washington, first President of the United States | 7005147430000000000147,430 | 7002468000000000000468 sq mi (70031212000000000001,212 km2) |
|
| 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 | 700498733000000000098,733 | 7002400000000000000400 sq mi (70031036000000000001,036 km2) |
|
| 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 | 700451454000000000051,454 | 7002695000000000000695 sq mi (70031800000000000001,800 km2) |
Read more about this topic: List Of Counties In Maryland