Buffalo County, South Dakota

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Buffalo County
Fort Thompson Big Bend Dam.
Fort Thompson Big Bend Dam.
Map of South Dakota highlighting Buffalo County
Location within the U.S. state of South Dakota
Map of the United States highlighting South Dakota
South Dakota's location within the U.S.
Coordinates: 44°05′N 99°12′W / 44.08°N 99.2°W / 44.08; -99.2
Country United States
State South Dakota
Founded1864 (created)
1871 (organized)
Named forAmerican buffalo
SeatGann Valley
Largest communityFort Thompson
 • Total488 sq mi (1,260 km2)
 • Land471 sq mi (1,220 km2)
 • Water16 sq mi (40 km2)  3.4%
 • Total1,948
 • Density4.0/sq mi (1.5/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districtAt-large

Buffalo County is a county located in the U.S. state of South Dakota. As of the 2020 census, 1,948 people lived there.[1] Its county seat is Gann Valley[2] which, at 10 people, is the least populous county seat in the United States. It was created in 1864.[3] as part of the Dakota Territory.

References[change | change source]

  1. "QuickFacts: Buffalo County, South Dakota". United States Census Bureau. Retrieved January 20, 2024.
  2. National Association of Counties. "NACo County Explorer". Retrieved January 20, 2024.
  3. "Dakota Territory, South Dakota, and North Dakota: Individual County Chronologies". Dakota Territory Atlas of Historical County Boundaries. The Newberry Library. 2006. Archived from the original on April 2, 2018. Retrieved March 28, 2015.