File:USACE_Fort_Thompson_Big_Bend_Dam.jpg · Wikimedia Commons · See Wikimedia Commons
Buffalo County
Sign in to saveAlso known as Buffalo County, South Dakota, Buffalo County, SD
county in South Dakota, United States
Key facts
- Country
- United States
- State
- South Dakota
- Founded
- 1864 (created), 1871 (organized)
- Named after
- American buffalo
- Seat
- Gann Valley
- Largest community
- Fort Thompson
- Total
- 488 sq mi (1,260 km )
- Land
- 471 sq mi (1,220 km )
- Water
- 16 sq mi (41 km ) 3.4%
- Estimate 2025
- 1,802
- Density
- 4.14/sq mi (1.60/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- At-large
- Website
- buffalo.sdcounties.org
via Wikipedia infobox
Wikidata facts
- Population
- 1948
- Area
- 1262
- Official website
- gannvalley.com/buffalo-county-1
- Image
- USACE Fort Thompson Big Bend Dam.jpg
- Households
- 540
Show 5 more facts
- Commons category
- Buffalo County, South Dakota
- inception
- 1873-00-00
- water as percent of area
- 3.4
- native label
- Buffalo County
- per capita income
- 12003
Sources (9)
via Wikidata · CC0
~6 min read
Article
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.
In 2010, the center of population of South Dakota was located in eastern Buffalo County. The Crow Creek Indian Reservation, inhabited by the Crow Creek Sioux Tribe, makes up the majority of Buffalo County.
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