Maryland County Map - List of 24 Counties in Maryland with Seats

Written and Fact-checked by , Reviewed by | Last Updated On: May 11, 2026

The U.S. state of Maryland is divided into 24 Counties. Explore the Maryland County Map, all Counties list along with their County Seats in alphabetical order and their population, areas and the date of formation.

Maryland County Map

Maryland County Map About Maryland County Map: The map showing the county boundary, all counties boundary, state capital and neighbouring states.

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About Counties of Maryland

Maryland is one of the states of US which is situated mid-Atlantic region of the country. The state is bordered with four states in different directions Pennsylvania to the north, Delaware to the east Virginia to the south, West Virginia to the west. Maryland is spread over 9707 square miles which would account for 25142 square kilometres. The capital city of Maryland is Annapolis. The state is blessed with nick name as ‘the old Line State and the Free State ’. The state in fact the home to the Chesapeake Bay, Maryland is famous for its blue crabs. Maryland has a very popular historic trading port at Baltimore. The state is called also as America in Miniature. Maryland Counties are twenty three in number and it has one Independent City. Maryland`s the largest County is Frederick and second biggest county is Garrett. The smallest county in Maryland is Calvert County. Montgomery County is the most populous county in the state. The least populous County is Kent in the state of Maryland. Maryland consists of 157 cities, towns and villages in the state. There are 154 Municipalities which are in Maryland Counties. Among all the cities of the state Baltimore is considered as independent city by state`s Constitution of Maryland now it is in fact the largest city in the state.

The state Maryland and its Counties are abide by the constitution of the state. The political power of Maryland is divided among the three branches of the Government. They are executive, legislative and judicial. The executive branch consists of the Governor, his cabinet and a number of departments.

The legislative branch of the government consists of The Maryland General Assembly which is composed of House of Delegates and Senate. The Judicial branch of the government consists of Supreme Court and all other courts. Maryland Counties are notable for having small number of local governments. There are 3 forms of county government in the state. They are Commissioner Counties, Charter Counties and Code Home Rule Counties.

The U.S. state of Maryland has 24 Counties. This is list of Maryland Counties and County Seats in alphabetical order along with check their population, areas and the date of formation.

List of Counties in Maryland

S.NCountyCounty SeatPopulation (2020 Census)AreaFormed
1Allegany CountyCumberland68,106430.63 sq mi (1,115 km2)1789
2Anne Arundel CountyAnnapolis588,261588.10 sq mi (1,523 km2)1650
3Baltimore CityBaltimore585,70892.28 sq mi (239 km2)1851
4Baltimore CountyTowson854,535682.03 sq mi (1,766 km2)1659
5Calvert CountyPrince Frederick92,783344.93 sq mi (893 km2)1654
6Caroline CountyDenton33,293326.26 sq mi (845 km2)1774
7Carroll CountyWestminster172,891452.06 sq mi (1,171 km2)1837
8Cecil CountyElkton103,725417.34 sq mi (1,081 km2)1674
9Charles CountyLa Plata166,617642.30 sq mi (1,664 km2)1658
10Dorchester CountyCambridge32,531983.08 sq mi (2,546 km2)1669
11Frederick CountyFrederick279,835667.31 sq mi (1,728 km2)1748
12Garrett CountyOakland28,806655.66 sq mi (1,698 km2)1872
13Harford CountyBel Air260,924526.57 sq mi (1,364 km2)1773
14Howard CountyEllicott City332,317252.04 sq mi (653 km2)1851
15Kent CountyChestertown19,198413.15 sq mi (1,070 km2)1642
16Montgomery CountyRockville1,062,061507.24 sq mi (1,314 km2)1776
17Prince George's CountyUpper Marlboro967,201499.87 sq mi (1,295 km2)1696
18Queen Anne's CountyCentreville52,460510.03 sq mi (1,321 km2)1706
19Saint Mary's CountyLeonardtown113,777764.46 sq mi (1,980 km2)1637
20Somerset CountyPrincess Anne24,620610.38 sq mi (1,581 km2)1666
21Talbot CountyEaston37,526477.04 sq mi (1,235 km2)1661
22Washington CountyHagerstown154,705467.46 sq mi (1,211 km2)1776
23Wicomico CountySalisbury103,588399.25 sq mi (1,034 km2)1867
24Worcester CountySnow Hill52,460695.57 sq mi (1,801 km2)1742

Maryland Counties Facts

ContinentNorth America
CountryUnited States
StateMaryland
Total Counties23 Counties
Independent CityBaltimore City
Capital CityAnnapolis
Largest CityBaltimore
Largest County by AreaWorcester County - 695 sq mi (1,800 km2)
Most Populated CountyMontgomery County - 1,062,061 (2020 Census)
Smallest County by AreaCalvert County - 345 sq mi (894 km2)
Least Populated CountyKent County - 19,198 (2020 Census)
StatehoodApril 28, 1788
Time ZoneEastern Time Zone (UTC -5 / UTC -4)
Postal AbbreviationMD
FIPS Code24
Major RiversPotomac River, Patuxent River, Susquehanna River
Major BaysChesapeake Bay
Highest PointHoye-Crest - 3,360 ft (1,024 m)
Major Metropolitan AreasBaltimore Metropolitan Area, Washington Metropolitan Area
Famous ForChesapeake Bay, blue crabs, seafood, historic towns, beaches, and colonial history
Top Tourist AttractionsOcean City, Inner Harbor, Assateague Island, Antietam National Battlefield, Chesapeake Bay
Official Websitemaryland.gov

Top 15 Major Cities in Maryland

City County Population (2020 Census) Latitude / Longitude
BaltimoreBaltimore City585,70839.2904, -76.6122
FrederickFrederick County78,17139.4143, -77.4105
RockvilleMontgomery County67,11739.0839, -77.1528
GaithersburgMontgomery County69,65739.1434, -77.2014
BowiePrince George’s County58,32939.0068, -76.7791
HagerstownWashington County43,52739.6418, -77.7200
AnnapolisAnne Arundel County40,81238.9784, -76.4922
College ParkPrince George’s County34,74038.9897, -76.9378
SalisburyWicomico County33,05038.3607, -75.5994
LaurelPrince George’s County30,06039.0993, -76.8483
GreenbeltPrince George’s County24,92139.0046, -76.8755
CumberlandAllegany County19,07539.6529, -78.7625
WestminsterCarroll County18,59039.5754, -76.9958
Takoma ParkMontgomery County17,62938.9779, -77.0075
EastonTalbot County16,91238.7743, -76.0763

Frequently Asked Questions About Maryland Counties

How many counties are there in Maryland?

Maryland has 23 counties and one independent city, Baltimore City, which functions separately from any county government.

Which is the largest county in Maryland?

Worcester County is the largest county in Maryland by total area. It covers about 695 square miles (1,800 square kilometers) in the eastern part of the state.

What is the most populated county in Maryland?

Montgomery County is the most populated county in Maryland, with a population of more than 1 million people according to the 2020 U.S. Census.

What are the major cities in Maryland counties?

Some of the major cities and communities in Maryland include Baltimore, Annapolis, Frederick, Rockville, Gaithersburg, Hagerstown, and Salisbury.

Which Maryland counties are popular tourist destinations?

Counties such as Worcester County, Anne Arundel County, Garrett County, and Frederick County are popular for beaches, mountains, historic towns, and outdoor attractions.

What is a county seat in Maryland?

A county seat is the main administrative center of a county where government offices, courts, and important public services are usually located.

US Counties Map by State

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