County Maps US

Seminole County, Oklahoma

A county in Oklahoma, ranked 37 of 77 by population.

CountyFIPS 40133

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

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Population
23,441
-75 (-0.3%) since 2020
Land area
632.8
square miles. A further 1.2% of the total area is water
Population density
37.0
people per square mile, computed rather than published
County seat
Wewoka
Seat of county government.
Established
1907
118 years ago
Largest city
Seminole city
Population 7,393.

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 Seminole 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 Seminole County, Oklahoma 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 407 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 Seminole County ranks

Position among the 77 counties of Oklahoma, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn OklahomaNationally
Population23,44137th of 771,672nd of 3,144
Land area632.8 sq mi59th of 771,510th of 3,144
Population density37.0 per sq mi29th of 771,747th of 3,144
Median household income$48,06270th of 772,868th of 3,143

Full data for Seminole County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population23,441Vintage 2025 Population Estimates
Population in 202023,516Vintage 2025 Population Estimates
2020 estimates base?23,555Vintage 2025 Population Estimates
Land area632.8 sq mi2025 Gazetteer Files
Water area7.7 sq mi2025 Gazetteer Files
Total area640.5 sq mi2025 Gazetteer Files
Population density?37.0 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$48,062American Community Survey 2020-2024 5-Year Estimates
Median home value$99,500American Community Survey 2020-2024 5-Year Estimates
Median age39.2American Community Survey 2020-2024 5-Year Estimates
Households8,782American Community Survey 2020-2024 5-Year Estimates
Housing units10,838American 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
-92
302 births, 394 deaths
Net migration
+181
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 4 areas bordering Seminole 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
Pottawatomie CountyOklahoma50 mi75,102
Okfuskee CountyOklahoma38 mi11,451
Pontotoc CountyOklahoma29 mi38,528
Hughes CountyOklahoma29 mi13,455

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

All 77 counties of Oklahoma

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

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