Buffalo County, South Dakota

Buffalo County: County in South Dakota, United States

About

Buffalo County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 1,912 and a population density of 2 people per km². After 10 years in 2020 county had an estimated population of 1,956 inhabitants. Its county seat is Gann Valley. The county was created 152 years ago in 1872.

Buffalo County locator map
Location of Buffalo County on South Dakota map.

Quick Facts about Buffalo County

Population : 1,956 (2020)
Country : United States of America
State : South Dakota (United States)
Different from : Buffalo County, Buffalo County
Area : 1262 km2
Water as percent of area : 3.4%
Land as percent of area : 96.6%
Named for : American bison
Capital : Gann Valley
Establishment : January 01, 1873
Time Zone : America/Chicago
Local time : 11:57:51 (22nd February 2025)
Density : 2 Pop. per km² as of 2020
Population growth : 2.25% (2010-2020)
USACE Fort Thompson Big Bend Dam image
USACE Fort Thompson Big Bend Dam
USACE Fort Thompson Big Bend Dam image
USACE Fort Thompson Big Bend Dam image

Geography

Buffalo County is located at 44°4'35"N 99°12'18"W (44.0763500, -99.2049600). It has 5 neighbors: Brule County, Hand County, Hyde County, Jerauld County and Lyman County.

Buffalo County map

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Buffalo County Populated Places

Cities, towns, neighborhoods & other populated places in Buffalo County.

City Name Population Title
Fort Thompson 1,282 Census-designated place in Buffalo County, South Dakota, United States
Shelby 97 Township in Brown County, South Dakota

Buffalo County has 5 neighbours.

  • Gann Valley

Demographics

The population of Buffalo County increased by 2.25% in 10 years.

Year Population % Change Method
1900 1,790 - estimation process
1910 1,589 -12.65% census
2010 1,912 16.89% census
2011 1,978 3.34% estimation process
2012 2,016 1.88% estimation process
2013 2,025 0.44% estimation process
2014 2,086 2.92% estimation process
2015 2,098 0.57% estimation process
2016 2,030 -3.35% estimation process
2017 2,013 -0.84% estimation process
2018 2,027 0.69% estimation process
2019 1,962 -3.31% estimation process
2020 1,956 -0.31% estimation process

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Other places with the same name (3)

South Dakota Other Counties (more counties)

County Name Population Title
Minnehaha County 196,659 County in South Dakota, United States of America
Sioux Falls 157,584 The largest city in South Dakota.
Pennington County 115,926 County in South Dakota, United States of America
Rapid City 77,503 The second most populous city in South Dakota.
Lincoln County 63,019 County in South Dakota, United States
Brown County 38,738 County in South Dakota, United States
Brookings County 35,603 County in South Dakota, United States of America
Meade County 28,588 County in South Dakota, United States
Codington County 28,186 County in South Dakota, United States of America
Lawrence County 26,221 County in South Dakota, United States
Yankton County 22,742 County in South Dakota, United States
Watertown 22,303 City in and county seat of Codington County, South Dakota, United States
Davison County 19,812 County in South Dakota, United States of America
Beadle County 18,513 County in South Dakota, United States
Hughes County 17,336 County in Oklahoma, United States
Union County 16,192 County in South Dakota, United States