County Maps US

Mobile County, Alabama

A county in Alabama, ranked 3 of 67 by population.

CountyFIPS 01097

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

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Population
411,658
-2,756 (-0.7%) since 2020
Land area
1,229
square miles. A further 25.2% of the total area is water
Population density
335
people per square mile, computed rather than published
County seat
Mobile
Seat of county government.
Established
1812
213 years ago
Largest city
Mobile city
Population 200,824.

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 Mobile 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 Mobile County, Alabama 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 416 by 800 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 Mobile County ranks

Position among the 67 counties of Alabama, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn AlabamaNationally
Population411,6583rd of 67187th of 3,144
Land area1,229 sq mi4th of 67498th of 3,144
Population density335 per sq mi3rd of 67396th of 3,144
Median household income$58,88024th of 672,181st of 3,143

Full data for Mobile County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population411,658Vintage 2025 Population Estimates
Population in 2020414,414Vintage 2025 Population Estimates
2020 estimates base?414,812Vintage 2025 Population Estimates
Land area1,229 sq mi2025 Gazetteer Files
Water area414.7 sq mi2025 Gazetteer Files
Total area1,644 sq mi2025 Gazetteer Files
Population density?335 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$58,880American Community Survey 2020-2024 5-Year Estimates
Median home value$190,700American Community Survey 2020-2024 5-Year Estimates
Median age38.5American Community Survey 2020-2024 5-Year Estimates
Households161,665American Community Survey 2020-2024 5-Year Estimates
Housing units186,082American 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
+127
5,048 births, 4,921 deaths
Net migration
-676
More people moved out than moved in.

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

The 5 areas bordering Mobile 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
Baldwin CountyAlabama85 mi267,761
Jackson CountyMississippi40 mi147,666
Washington CountyAlabama30 mi14,822
George CountyMississippi18 mi26,331
Greene CountyMississippi8.0 mi13,707

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

All 67 counties of Alabama

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

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