Lawrence County, South Dakota

Lawrence County
Lawrence County Courthouse in Deadwood
Location within the U.S. state of South Dakota
South Dakota's location within the U.S.
Coordinates: 44°20′54.65″N 103°48′22.903″W / 44.3485139°N 103.80636194°W / 44.3485139; -103.80636194
Country United States
State South Dakota
FoundedJanuary 11, 1875 (created)
1877 (organized)
Named afterJohn Lawrence
SeatDeadwood
Largest citySpearfish
Area
  Total
800.311 sq mi (2,072.80 km2)
  Land800.053 sq mi (2,072.13 km2)
  Water0.258 sq mi (0.67 km2)  0.03%
Population
 (2020)
  Total
25,768
  Estimate 
(2024)
28,809
  Density35.068/sq mi (13.540/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional districtAt-large
Websitelawrence.sd.us

Lawrence County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 25,768, making it the 8th most populous county in South Dakota, and was estimated to be 28,809 in 2024. Its county seat is Deadwood.

Lawrence County is coextensive with the Spearfish, SD Micropolitan Statistical Area, which is also included in the Rapid City-Spearfish, SD Combined Statistical Area.