Brown County, South Dakota

Brown County
Brown County Courthouse in fall
Flag of Brown County
Map of South Dakota highlighting Brown 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: 45°36′N 98°21′W / 45.6°N 98.35°W / 45.6; -98.35
Country United States
State South Dakota
FoundedJuly 6, 1881[1]
SeatAberdeen
Largest cityAberdeen
Area
 • Total1,731 sq mi (4,480 km2)
 • Land1,713 sq mi (4,440 km2)
 • Water18 sq mi (50 km2)  1.0%
Population
 (2020)
 • Total38,301
 • Estimate 
(2023)
37,733 Decrease
 • Density22/sq mi (8.5/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional districtAt-large
Websitewww.brown.sd.us

Brown County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 38,301,[2] making it the fourth most populous county in South Dakota. Its county seat is Aberdeen.[3] The county is named for Alfred Brown, of Hutchinson County, South Dakota, a Dakota Territory legislator in 1879.[1][4]

Brown County is part of the Aberdeen, SD Micropolitan Statistical Area.

  1. ^ a b Legislative Manual, South Dakota, 2005, p. 596
  2. ^ "State & County QuickFacts". United States Census Bureau. Retrieved March 21, 2024.
  3. ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
  4. ^ History of the Origin of the Place Names in Nine Northwestern States. 1908. p. 12.