CountyAtlas

CountyAtlas Maryland

Maryland County Map — 23 Counties and 1 Independent City

All 24 of Maryland's counties, mapped from official U.S. Census boundaries with population, income, and unemployment for every one. Colour the map by any measure, tap a county for its data, or download a print-ready copy.

Maryland CountiesFIPS 24
Allegany CountyAnne Arundel CountyBaltimore CountyCalvert CountyCaroline CountyCarroll CountyCecil CountyCharles CountyDorchester CountyFrederick CountyGarrett CountyHarford CountyHoward CountyKent CountyMontgomery CountyPrince George's CountyQueen Anne's CountySt. Mary's CountySomerset CountyTalbot CountyWashington CountyWicomico CountyWorcester CountyBaltimore city
Albers Equal Area ConicDatum NAD83Census PEP · SAIPE · BLS LAUS · TIGER
CountyAtlasEdition
Maryland’s 23 counties and 1 independent city, projected equal-area. Hover or tap a county for its name; select it for full data.
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Tap any county for its population, income, and more.

Maryland at a glance

  • Scale. Maryland is divided into 24 counties and independent cities across 9,711 sq mi of land — an average of 405 sq mi each. Census TIGER
  • People. Its counties and independent cities are home to 6,180,253 residents — an average of 257,511 each, or 636 per square mile statewide. Census PEP 2023
  • Water. Another 2,695 sq mi is water — 21.7% of the state’s area, led by Dorchester County. Census TIGER

Maryland’s 23 counties and 1 independent city, by the numbers

Every county or independent city’s population, median household income, unemployment, density, and land area — sortable by any column, so you can find yours or rank by what matters to you. A few patterns run through the data:

  • Concentrated. Half of Maryland’s 6,180,253 residents live in just 4 of 24 counties and independent cities, and the five largest hold 64.9% of the total. Census PEP 2023
  • Income tracks poverty. The gap from richest to poorest runs 2.7×, and the 10 highest-income counties and independent cities average 6.7% in poverty against 15.2% for the 10 lowest. Census SAIPE 2023
  • Mostly small. Half of Maryland’s counties and independent cities have fewer than 110,477 residents, and half report a median household income below $87,200 — a few metros lift the statewide totals well above both. Census PEP 2023 · SAIPE 2023
  • Lopsided density. Only 6 of 24 counties and independent cities are denser than Maryland’s statewide average of 636 people per square mile — the rest are more rural. Census PEP 2023 · TIGER
Allegany County67,273$54,7594.9%159/sq mi422 sq miCumberland
Anne Arundel County594,582$116,9563.3%1,433/sq mi415 sq miAnnapolis
Baltimore city565,239$58,6165.4%6,983/sq mi81 sq mi—
Baltimore County844,703$86,8073.9%1,412/sq mi598 sq miTowson
Calvert County94,728$124,4863.3%444/sq mi213 sq miPrince Frederick
Caroline County33,593$63,4913.6%105/sq mi319 sq miDenton
Carroll County176,639$113,8852.8%395/sq mi448 sq miWestminster
Cecil County105,672$87,5923.8%305/sq mi346 sq miElkton
Charles County171,973$105,1414.3%376/sq mi458 sq miLa Plata
Dorchester County32,879$63,0874.5%61/sq mi541 sq miCambridge
Frederick County293,391$114,0893.4%444/sq mi661 sq miFrederick
Garrett County28,423$65,9913.6%44/sq mi649 sq miOakland
Harford County264,644$104,5533.4%605/sq mi437 sq miBel Air
Howard County336,001$140,1133.4%1,339/sq mi251 sq miEllicott City
Kent County19,303$69,7813.5%70/sq mi277 sq miChestertown
Montgomery County1,058,474$125,0763.6%2,146/sq mi493 sq miRockville
Prince George's County947,430$97,1714.6%1,963/sq mi483 sq miUpper Marlboro
Queen Anne's County52,508$112,5272.9%141/sq mi372 sq miCentreville
Somerset County24,910$51,8414.2%78/sq mi320 sq miPrincess Anne
St. Mary's County115,281$102,3453.2%321/sq mi359 sq miLeonardtown
Talbot County37,823$80,3713.5%141/sq mi269 sq miEaston
Washington County155,813$71,6854.1%340/sq mi458 sq miHagerstown
Wicomico County104,800$70,9754.0%280/sq mi374 sq miSalisbury
Worcester County54,171$75,4594.2%116/sq mi468 sq miSnow Hill

All 24 counties and independent cities, sortable by any column — click a heading. A suppressed estimate (coefficient of variation ≥ 0.30) shows a marker, never a guess. County seats are from Wikidata (CC0), each validated to a Census place inside its county; a county with no validated seat is left blank. See the methodology.

Download & print this Maryland map

Map of Maryland's 23 counties and 1 independent city — on official U.S. Census boundaries

Free, print-ready maps of Maryland — all 24 counties on official U.S. Census boundaries, no watermark. Public domain (CC0).

  • Full map — counties + major cities: PNG · PDF
  • Blank outline — print & label it yourself: PNG · PDF
  • Counties only — clean labeled reference: PNG · PDF

Maryland maps, coloured by the data

Map of Maryland counties shaded by population — official U.S. Census data
Population Map by County · Census PEP 2023
Map of Maryland counties shaded by median household income — official U.S. Census data
Median Household Income Map by County · Census SAIPE 2023
Map of Maryland counties shaded by unemployment rate — U.S. Bureau of Labor Statistics
Unemployment Rate Map by County · BLS LAUS

Cities in Maryland

Maryland has 156 incorporated cities, towns, and villages. The largest is Baltimore, an independent city, with 577,193 residents. Use the search on the map above to find any city and highlight the county it sits in.

Baltimoreindependent city577,193
FrederickFrederick County80,617
GaithersburgMontgomery County69,225
RockvilleMontgomery County67,218
BowiePrince George's County57,771
HagerstownWashington County43,490
AnnapolisAnne Arundel County40,744
College ParkPrince George's County34,397
SalisburyWicomico County33,080
LaurelPrince George's County29,594
GreenbeltPrince George's County24,572
HyattsvillePrince George's County20,861
WestminsterCarroll County20,257
CumberlandAllegany County18,938
Takoma ParkMontgomery County17,522
Easton (town)Talbot County17,202
AberdeenHarford County16,831
Elkton (town)Cecil County15,867
Havre de GraceHarford County14,857
New CarrolltonPrince George's County13,544
CambridgeDorchester County13,094
Bel Air (town)Harford County10,616
La Plata (town)Charles County10,470
Mount Airy (town)Carroll County9,746
Bladensburg (town)Prince George's County9,552
Mount RainierPrince George's County8,235
BrunswickFrederick County7,994
TaneytownCarroll County7,295
Riverdale Park (town)Prince George's County7,249
FrostburgAllegany County7,025
Ocean City (town)Worcester County6,887
Thurmont (town)Frederick County6,439
Chesapeake Beach (town)Calvert County6,428
Walkersville (town)Frederick County6,352
GlenardenPrince George's County6,320
Hampstead (town)Carroll County6,311
Cheverly (town)Prince George's County6,107
District HeightsPrince George's County5,888
Poolesville (town)Montgomery County5,704
FruitlandWicomico County5,698
Chestertown (town)Kent County5,548
Manchester (town)Carroll County5,446
Berlin (town)Worcester County5,161
Middletown (town)Frederick County5,108
Denton (town)Caroline County4,879
Centreville (town)Queen Anne's County4,725
Leonardtown (town)St. Mary's County4,712
Seat PleasantPrince George's County4,515
Perryville (town)Cecil County4,425
Pocomoke CityWorcester County4,360

Showing the 50 most populous — and 106 more. Search the map above for any Maryland city or village.

A city can span more than one county; each is listed in its primary county — the one its center falls in. Some Maryland cities are independent cities — each is its own county-equivalent, not part of a surrounding county — and are marked as such.

Which Maryland county is the richest, largest, most crowded? The answers

  • Maryland’s highest median household income is in Howard County ($140,113); the lowest is in Somerset County ($51,841). Census SAIPE 2023
  • Maryland’s most populous county is Montgomery County (1,058,474); the least populous is Kent County (19,303) — a 55× spread. Census PEP 2023
  • Maryland’s largest county by land area is Frederick County (661 sq mi); the smallest is Baltimore city (81 sq mi). Census TIGER
  • Maryland’s highest population density is in Baltimore city (6,983/sq mi); the lowest is in Garrett County (44/sq mi). Census PEP 2023 · TIGER
  • Maryland’s highest poverty rate is in Somerset County (22.9%); the lowest is in Calvert County (4.9%). Census SAIPE 2023
  • In Maryland, unemployment is highest in Baltimore city (5.4%) and lowest in Carroll County (2.8%), for May 2026. BLS LAUS
  • Maryland’s highest median age is in Talbot County (51.1); the lowest is in Baltimore city (36.1). Census ACS 2019–2023
  • Maryland’s highest share of bachelor’s degrees is in Howard County (64.5% of adults); the lowest is in Somerset County (17.1%). Census ACS 2019–2023

Every figure is a current official estimate from the source named — not a crowd-sourced or copied value. Suppressed estimates (coefficient of variation ≥ 0.30) are omitted, never guessed. See the full methodology.

Maryland counties: common questions

How many counties are in Maryland?

Maryland has 23 counties and 1 independent city covering 9,711 sq mi and about 6.2M residents. Every one is on the map above and in the table below.

What is the largest county in Maryland?

It depends on the measure. By land area it’s Frederick County (661 sq mi); by population it’s Montgomery County (1,058,474 residents).

What county is Baltimore in?

Baltimore (population 577,193) is an independent city — its own county-equivalent. Use the search on the map to find any Maryland city’s county.

What is the richest county in Maryland?

By median household income, Howard County is the richest at $140,113; the poorest is Somerset County at $51,841 (Census SAIPE 2023).

What is the most populous county in Maryland?

Montgomery County, with 1,058,474 residents — about 17.1% of Maryland’s people, and 55× the least populous, Kent County (19,303).

Sources & vintages

  • Population — PEP Vintage 2023 (July 1, 2023) — pep/charv
  • Median household income & poverty — SAIPE 2023
  • Unemployment — BLS LAUS May 2026 (preliminary)
  • Geometry & boundaries — Census TIGERweb
  • Cities & city population — Census TIGERweb Incorporated Places + ACS 5-year 2019–2023

Data current through .