County Maps US

Washington County, Maryland

A county in Maryland, ranked 11 of 24 by population.

CountyFIPS 24043

Within Maryland
Washington County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Hagerstown, the county seat, located via the 2025 Census Gazetteer.

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Population
157,731
+3,032 (+2.0%) since 2020
Land area
457.8
square miles. A further 2.0% of the total area is water
Population density
345
people per square mile, computed rather than published
County seat
Hagerstown
Seat of county government.
Established
1776
249 years ago
Largest city
Hagerstown city
Population 44,228.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Washington County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Washington County, Maryland from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 504 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Washington County ranks

Position among the 24 counties of Maryland, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MarylandNationally
Population157,73111th of 24448th of 3,144
Land area457.8 sq mi9th of 242,239th of 3,144
Population density345 per sq mi12th of 24389th of 3,144
Median household income$77,74717th of 24684th of 3,143

Full data for Washington County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population157,731Vintage 2025 Population Estimates
Population in 2020154,699Vintage 2025 Population Estimates
2020 estimates base?154,699Vintage 2025 Population Estimates
Land area457.8 sq mi2025 Gazetteer Files
Water area9.6 sq mi2025 Gazetteer Files
Total area467.4 sq mi2025 Gazetteer Files
Population density?345 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$77,747American Community Survey 2020-2024 5-Year Estimates
Median home value$296,100American Community Survey 2020-2024 5-Year Estimates
Median age40.7American Community Survey 2020-2024 5-Year Estimates
Households59,818American Community Survey 2020-2024 5-Year Estimates
Housing units64,145American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-135
1,554 births, 1,689 deaths
Net migration
+724
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 8 areas bordering Washington County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Frederick CountyMaryland34 mi302,883
Berkeley CountyWest Virginia34 mi139,522
Franklin CountyPennsylvania34 mi160,652
Jefferson CountyWest Virginia24 mi63,102
Morgan CountyWest Virginia23 mi18,027
Allegany CountyMaryland16 mi66,848
Fulton CountyPennsylvania13 mi14,483
Loudoun CountyVirginia2.5 mi449,749

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 24 counties of Maryland

Open the interactive Maryland county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.