Bennett County

Also known as Bennett County, South Dakota, Bennett County, SD

county in South Dakota, United States

Key facts

Country: United States
State: South Dakota
Founded: June 3, 1909 (created), April 27, 1912 (organized)
Named after: John E. Bennett or Granville G. Bennett
Seat: Martin
Largest city: Martin
Total: 1,190.451 sq mi (3,083.25 km )
Land: 1,184.642 sq mi (3,068.21 km )
Water: 5.809 sq mi (15.05 km ) 0.5%
Estimate 2025: 3,307
Density: 2.788/sq mi (1.076/km )
Time zone: UTC−7 ( Mountain )
Summer dst

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Article

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).