County Maps US

Deuel County, South Dakota

A county in South Dakota, ranked 38 of 66 by population.

CountyFIPS 46039

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

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Population
4,408
+112 (+2.6%) since 2020
Land area
622.7
square miles. A further 2.2% of the total area is water
Population density
7.1
people per square mile, computed rather than published
County seat
Clear Lake
Seat of county government.
Established
1862
163 years ago
Largest city
Clear Lake city
Population 1,220.

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 Deuel 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 Deuel County, South Dakota 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 593 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 Deuel County ranks

Position among the 66 counties of South Dakota, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn South DakotaNationally
Population4,40838th of 662,860th of 3,144
Land area622.7 sq mi49th of 661,549th of 3,144
Population density7.1 per sq mi27th of 662,685th of 3,144
Median household income$83,1128th of 66481st of 3,143

Full data for Deuel County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population4,408Vintage 2025 Population Estimates
Population in 20204,296Vintage 2025 Population Estimates
2020 estimates base?4,295Vintage 2025 Population Estimates
Land area622.7 sq mi2025 Gazetteer Files
Water area13.9 sq mi2025 Gazetteer Files
Total area636.6 sq mi2025 Gazetteer Files
Population density?7.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$83,112American Community Survey 2020-2024 5-Year Estimates
Median home value$205,900American Community Survey 2020-2024 5-Year Estimates
Median age41.8American Community Survey 2020-2024 5-Year Estimates
Households1,754American Community Survey 2020-2024 5-Year Estimates
Housing units2,155American 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
+27
67 births, 40 deaths
Net migration
+5
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 7 areas bordering Deuel 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
Brookings CountySouth Dakota21 mi37,635
Grant CountySouth Dakota21 mi7,534
Hamlin CountySouth Dakota18 mi6,900
Yellow Medicine CountyMinnesota12 mi9,477
Codington CountySouth Dakota12 mi29,562
Lac qui Parle CountyMinnesota12 mi6,704
Lincoln CountyMinnesota6.1 mi5,583

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

All 66 counties of South Dakota

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

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