County Maps US

Dewey County, Oklahoma

A county in Oklahoma, ranked 71 of 77 by population.

CountyFIPS 40043

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

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Population
4,207
-269 (-6.0%) since 2020
Land area
999.6
square miles. A further 0.9% of the total area is water
Population density
4.2
people per square mile, computed rather than published
County seat
Taloga
Seat of county government.
Established
1892
133 years ago
Largest city
Seiling city
Population 800 for the whole place, which extends beyond this county.

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 Dewey 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 Dewey 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 800 by 501 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 Dewey 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
Population4,20771st of 772,869th of 3,144
Land area999.6 sq mi21st of 77681st of 3,144
Population density4.2 per sq mi71st of 772,808th of 3,144
Median household income$62,56924th of 771,842nd of 3,143

Full data for Dewey County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population4,207Vintage 2025 Population Estimates
Population in 20204,476Vintage 2025 Population Estimates
2020 estimates base?4,483Vintage 2025 Population Estimates
Land area999.6 sq mi2025 Gazetteer Files
Water area8.8 sq mi2025 Gazetteer Files
Total area1,008 sq mi2025 Gazetteer Files
Population density?4.2 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$62,569American Community Survey 2020-2024 5-Year Estimates
Median home value$133,600American Community Survey 2020-2024 5-Year Estimates
Median age38.5American Community Survey 2020-2024 5-Year Estimates
Households1,631American Community Survey 2020-2024 5-Year Estimates
Housing units2,184American 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
-37
40 births, 77 deaths
Net migration
-26
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 6 areas bordering Dewey 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
Custer CountyOklahoma42 mi28,175
Blaine CountyOklahoma25 mi8,515
Woodward CountyOklahoma24 mi19,827
Major CountyOklahoma18 mi7,536
Roger Mills CountyOklahoma14 mi3,259
Ellis CountyOklahoma10 mi3,613

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.