Allegany County, Maryland

A county in Maryland, ranked 16 of 24 by population.

CountyFIPS 24001

Within Maryland

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

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Population: 66,848; -1,119 (-1.6%) since 2020
Land area: 422.2; square miles. A further 1.3% of the total area is water
Population density: 158; people per square mile, computed rather than published
County seat: Cumberland; Seat of county government.
Established: 1789; 236 years ago
Largest city: Cumberland city; Population 18,799.

Satellite view

Aerial imagery of Allegany 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 Allegany 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 435 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 Allegany 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.

Measure	Value	In Maryland	Nationally
Population	66,848	16th of 24	819th of 3,144
Land area	422.2 sq mi	12th of 24	2,399th of 3,144
Population density	158 per sq mi	16th of 24	674th of 3,144
Median household income	$59,603	24th of 24	2,115th of 3,143

Full data for Allegany County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
Measure	Value	Source and vintage
Population	66,848	Vintage 2025 Population Estimates
Population in 2020	67,967	Vintage 2025 Population Estimates
2020 estimates base?	68,110	Vintage 2025 Population Estimates
Land area	422.2 sq mi	2025 Gazetteer Files
Water area	5.7 sq mi	2025 Gazetteer Files
Total area	427.9 sq mi	2025 Gazetteer Files
Population density?	158 per sq mi	Computed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income	$59,603	American Community Survey 2020-2024 5-Year Estimates
Median home value	$154,900	American Community Survey 2020-2024 5-Year Estimates
Median age	41.2	American Community Survey 2020-2024 5-Year Estimates
Households	27,382	American Community Survey 2020-2024 5-Year Estimates
Housing units	32,720	American 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: -371; 577 births, 948 deaths
Net migration: +227; 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 Allegany 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 area	State	Shared border	Population
Mineral County	West Virginia	52 mi	26,792
Morgan County	West Virginia	28 mi	18,027
Bedford County	Pennsylvania	23 mi	47,480
Garrett County	Maryland	18 mi	28,370
Washington County	Maryland	16 mi	157,731
Hampshire County	West Virginia	12 mi	24,105
Somerset County	Pennsylvania	6.4 mi	72,004
Fulton County	Pennsylvania	2.0 mi	14,483

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.