County
· South Dakota
Buffalo County
Buffalo County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 1,948. Its county seat is Gann Valley which, at 10 people, is the least populous county seat in the United States. The county was created in 1864, and was organized in 1871 as part of the Dakota Territory.
1,923 population
(2021)
·
County area: Buffalo
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Townships 1
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 194048
- FIPS state
- 46
- FIPS county
- 017
- FIPS place
- 99017
- Census record name
- COUNTY OF BUFFALO
- Mailing address
- PO BOX 146, GANN VALLEY 57341