County Maps US

Perkins County, South Dakota

A county in South Dakota, ranked 49 of 66 by population.

CountyFIPS 46105

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

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Population
2,853
+24 (+0.8%) since 2020
Land area
2,870
square miles. A further 0.7% of the total area is water
Population density
0.99
people per square mile, computed rather than published
County seat
Bison
Seat of county government.
Established
1909
116 years ago
Largest city
Lemmon city
Population 1,158.

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 Perkins 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 Perkins 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 614 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 Perkins 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
Population2,85349th of 662,964th of 3,144
Land area2,870 sq mi2nd of 66181st of 3,144
Population density0.99 per sq mi64th of 663,075th of 3,144
Median household income$66,90844th of 661,442nd of 3,143

Full data for Perkins County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population2,853Vintage 2025 Population Estimates
Population in 20202,829Vintage 2025 Population Estimates
2020 estimates base?2,829Vintage 2025 Population Estimates
Land area2,870 sq mi2025 Gazetteer Files
Water area19.5 sq mi2025 Gazetteer Files
Total area2,890 sq mi2025 Gazetteer Files
Population density?0.99 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$66,908American Community Survey 2020-2024 5-Year Estimates
Median home value$114,600American Community Survey 2020-2024 5-Year Estimates
Median age44.0American Community Survey 2020-2024 5-Year Estimates
Households1,309American Community Survey 2020-2024 5-Year Estimates
Housing units1,744American 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
-2
35 births, 37 deaths
Net migration
+22
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 6 areas bordering Perkins 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
Harding CountySouth Dakota51 mi1,331
Meade CountySouth Dakota47 mi30,711
Adams CountyNorth Dakota45 mi2,275
Corson CountySouth Dakota33 mi3,781
Ziebach CountySouth Dakota30 mi2,389
Butte CountySouth Dakota12 mi10,856

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.