Bennett County, South Dakota

Bennett County
Art Deco style Inland Theater at Martin SD.
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 43°11′12.883″N 101°40′37.851″W / 43.18691194°N 101.67718083°W / 43.18691194; -101.67718083
Country United States
State South Dakota
FoundedJune 3, 1909 (created)
April 27, 1912 (organized)
Named afterJohn E. Bennett or Granville G. Bennett
SeatMartin
Largest cityMartin
Area
  Total
1,190.451 sq mi (3,083.25 km2)
  Land1,184.642 sq mi (3,068.21 km2)
  Water5.809 sq mi (15.05 km2)  0.5%
Population
 (2020)
  Total
3,381
  Estimate 
(2024)
3,289
  Density2.788/sq mi (1.076/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional districtAt-large

Bennett County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 3,381. Its county seat is Martin. Bennett County was removed from the Pine Ridge Reservation by an act of Congress in 1911, much of Bennett County however is still held in trust by the Reservation. To the east is the Rosebud Indian Reservation, where dwell the Sicangu Oyate, also known the Upper Brulé Sioux Nation and the Rosebud Sioux Tribe (RST), a branch of the Lakota people.

The North American continental pole of inaccessibility is in Bennett County, located 1,650 km (1,030 mi) from the nearest coastline, between Allen and Kyle (Oglala Lakota County) at 43°22′N 101°58′W / 43.36°N 101.97°W / 43.36; -101.97 (Pole of Inaccessibility North America).

Historically, ranching and dry land farming have been the chief agricultural pursuits possible given climate and soil conditions.