Maryland County Map With Cities
By Marko Visic · Updated Oct 5, 2026
Maryland has 23 counties and one independent city, Baltimore, covering 9,711 square miles of land. The Census Bureau estimates its population at 6,265,347 as of July 1, 2025. The largest county or city by land area is Frederick County; the most populous is Montgomery County; the least populous is Kent County.
Tap or click any county or city for details. Need a printable version? Blank Maryland map (PDF/PNG/SVG).
Baltimore is an independent city: it is not part of any county, including Baltimore County.
All 23 Maryland counties and Baltimore
| County or city | FIPS code | Population (July 1, 2025) ▼ | Change since April 2020 | Land area (sq mi) | People per sq mi | Median household income (2020–2024) |
|---|---|---|---|---|---|---|
| Montgomery County | 24031 | 1,074,582 | +1.2% | 493 | 2,179 | $132,450 |
| Prince George's County | 24033 | 970,374 | +0.3% | 483 | 2,011 | $101,798 |
| Baltimore County | 24005 | 847,650 | -0.8% | 598 | 1,417 | $91,768 |
| Anne Arundel County | 24003 | 603,380 | +1.8% | 415 | 1,455 | $124,911 |
| Baltimore city | 24510 | 569,997 | -2.7% | 81 | 7,042 | $62,177 |
| Howard County | 24027 | 339,183 | +2.1% | 251 | 1,352 | $149,763 |
| Frederick County | 24021 | 302,883 | +11.5% | 661 | 458 | $122,002 |
| Harford County | 24025 | 266,446 | +2.1% | 437 | 610 | $112,265 |
| Carroll County | 24013 | 176,677 | +2.2% | 448 | 395 | $118,211 |
| Charles County | 24017 | 176,593 | +6.0% | 458 | 386 | $122,816 |
| Washington County | 24043 | 157,731 | +2.0% | 458 | 345 | $77,747 |
| St. Mary's County | 24037 | 116,692 | +2.6% | 359 | 325 | $119,446 |
| Cecil County | 24015 | 107,131 | +3.3% | 346 | 309 | $92,007 |
| Wicomico County | 24045 | 106,899 | +3.2% | 374 | 286 | $76,210 |
| Calvert County | 24009 | 94,484 | +1.8% | 213 | 443 | $133,922 |
| Allegany County | 24001 | 66,848 | -1.9% | 422 | 158 | $59,603 |
| Worcester County | 24047 | 54,459 | +3.8% | 468 | 116 | $81,745 |
| Queen Anne's County | 24035 | 54,448 | +9.2% | 372 | 146 | $112,826 |
| Talbot County | 24041 | 38,238 | +1.9% | 269 | 142 | $84,811 |
| Caroline County | 24011 | 34,116 | +2.5% | 319 | 107 | $68,457 |
| Dorchester County | 24019 | 33,628 | +3.4% | 541 | 62 | $61,839 |
| Garrett County | 24023 | 28,370 | -1.5% | 649 | 44 | $67,688 |
| Somerset County | 24039 | 24,973 | +1.5% | 320 | 78 | $64,943 |
| Kent County | 24029 | 19,565 | +1.9% | 277 | 71 | $80,147 |
FIPS code: the Census Bureau’s five-digit county ID, a two-digit state code plus a three-digit county code. It is not a ZIP code.
How many counties and independent cities does Maryland have?
Maryland has 23 counties and one independent city, Baltimore covering 9,711 square miles. The state was admitted to the Union in 1788 as the 7th state.
The largest county or city by land area is Frederick County at 661 square miles, home to 302,883 residents. The most populous is Montgomery County with 1,074,582 residents — a density of 2,179 people per square mile. At the other end of the scale, Kent County has 19,565 residents.
Maryland’s capital is Annapolis, while the largest city is Baltimore.
Related resources
Download a printable outline of Maryland’s county or city boundaries from our blank map of Maryland page — available in SVG, PNG, and PDF.
Use the What County Am I In? tool to detect which Maryland county or city a GPS location or address falls in, or the Address to County Lookup for batch input.
For demographic radius analysis, the Find ZIP Codes in Radius and Population Within Radius tools let you draw a circle around any Maryland address and see every ZIP code and the total population inside.
Two SimpleMapLab studies cover Maryland specifically: the 100-mile radius around Annapolis measures how much of the state lives within 100 miles of its capitol, and the loneliest town in Maryland ranks the state’s most isolated inhabited place. The county-counts blog post puts Maryland’s 23 counties and one independent city, Baltimore in national context.
Frequently asked questions
- County Population Totals, Vintage 2025: estimates for July 1, 2025, released March 2026
- Gazetteer Files, 2026: county land and water area
- American Community Survey 5-Year Estimates, 2020–2024: median household income (table B19013)
- County boundaries on the map: US Atlas TopoJSON build of the US Census Bureau’s TIGER/Line shapefiles. All figures are US Census Bureau data in the public domain.