Bison is a town in Perkins County, South Dakota, home to about 406 people across 1.0 square miles. Its ZIP code is 57620.
Mostly Bison
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| Nearest major airport | Denver International Airport (DEN)406 miles away |
|---|---|
| Closer regional airport | Dickinson Theodore Roosevelt Regional Airport (DIK)90 miles away |
| Nearest city of 250,000+ | Denver, CO416 miles away |
| Nearest city of 1 million+ | Chicago, IL781 miles away |
Straight-line distances from the center of Bison; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Bison had 302 residents in the 2020 census, down 19% since 2000.
It’s the 169th largest of 440 towns in South Dakota by population.
Perkins County grew from 11,348 residents in 1910 to 2,835 in 2020.
Perkins County, 1910–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 10°F. About 18.2 inches of rain and melted snow fall in a typical year, with about 40 inches of snow.
Source: NOAA 1991–2020 climate normals, Bison, SD weather station (about a mile away).
734 jobs at 113 businesses in Perkins County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
2 doctors and other health care providers list an office in Bison.
Nearest hospitals
Providers with an office here
| Nurse practitioners and physician assistants | 2 |
|---|
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (1 nearby)
Libraries (1 nearby)
Museums (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Bison School District 52-1. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Bison Elementary - 02Bison | K–6 | 65 | Public | 1.1 mi |
| Bison Jr. High - 04Bison | 7–8 | 18 | Public | 1.1 mi |
| Bison High School - 01Bison | 9–12 | 52 | Public | 1.1 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.