Brown County
Sign in to saveAlso known as Brown County, South Dakota, Brown County, SD
county in South Dakota, United States
Key facts
- Country
- United States
- State
- South Dakota
- Founded
- July 6, 1881
- Named after
- Alfred Brown
- Seat
- Aberdeen
- Largest city
- Aberdeen
- Total
- 1,730.951 sq mi (4,483.14 km )
- Land
- 1,713.030 sq mi (4,436.73 km )
- Water
- 17.921 sq mi (46.42 km ) 1.0%
- Estimate 2025
- 37,561
- Density
- 22/sq mi (8.5/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- At-large
- Website
- brown.sd.us
via Wikipedia infobox
Wikidata facts
- Population
- 38301
- Area
- 4484
- Official website
- www.brown.sd.us
- Image
- Brown County Courthouse (Aberdeen) - restored.jpg
- Households
- 16245
Show 5 more facts
- Commons category
- Brown County, South Dakota
- inception
- 1881-00-00
- water as percent of area
- 1
- native label
- Brown County
- per capita income
- 33535
Sources (8)
via Wikidata · CC0
~7 min read
Article
Brown County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 38,301, making it the fourth most populous county in South Dakota, and was estimated to be 37,561 in 2025. Its county seat is Aberdeen. The county is named for Alfred Brown, of Hutchinson County, South Dakota, a Dakota Territory legislator in 1879.
Brown County is part of the Aberdeen, SD Micropolitan Statistical Area.
On the map
2 mapped locations
Connections
race and ethnicity in the United States Census
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African Americans
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list of cities in South Dakota
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Barack Obama
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city
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South Dakota
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time zone
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North Dakota
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geographic coordinate system
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Republican Party (United States)
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Democratic Party (United States)
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U.S. state
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Pierre
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Daylight saving time
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town
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Q5390
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UTC−06:00
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county of the United States
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United States Census Bureau
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Aberdeen
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