Perkins County, South Dakota

Perkins County, South Dakota, has 2,853 residents (July 2025 estimate). Its county seat is Bison. It uses Mountain Time and covers 2,870 sq mi (7,434 km²) of land.

Perkins County in South Dakota

Perkins County and its neighbors (simplified outlines). Open in OpenStreetMap ↗

Resident population, July 2025: 2,853
Land area: 2,870 sq mi (7,434 km²)
County seat or government: Bison
Time zone: Mountain TimeUTC-07:00 in January; UTC-06:00 in July
Median household income: $66,908 ± $9,644
Median home value: $114,600 ± $15,529
Median rent, with utilities: $738 ± $181
Homes lived in by their owners: 78.4% ± 8.0 points
County type: County
Metro or micro area: Outside any metro or micro areaNext to: Rapid City, SD metro area
Water area: 19.5 sq mi (50.5 km²)
State: South Dakota
County code (FIPS): 46105
Coordinates (central point): 45.483387, -102.467995

Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Perkins County

Time zone	Local time and UTC offset	Next clock change
Mountain TimeAmerica/Denver	UTC-07:00 in January; UTC-06:00 in July. Enable JavaScript for the live clock.	Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

576381,852 people
586391,762 people
57626979 people
57620564 people
57644388 people
57649273 people
57651191 people
5764041 people
5775835 people

9 ZIP Code areas overlap Perkins County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Perkins County, largest first

All 40

People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county

School districts in Perkins County, largest first

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

Lemmon, South Dakota (city)1,208 people
Bison, South Dakota (town)406 people
Prairie City, South Dakota (CDP)20 people

Bordering areas, nearest first

Distances are straight lines between map points.

Adams County, North Dakota43 mi north
Harding County, South Dakota49 mi west
Ziebach County, South Dakota52 mi southeast
Meade County, South Dakota62 mi south
Corson County, South Dakota64 mi east
Butte County, South Dakota65 mi southwest

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See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.