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Where am ILOCATED

Brown County, South Dakota

Brown County, South Dakota, has 37,561 residents (July 2025 estimate). Its county seat is Aberdeen. It uses Central Time and covers 1,713 sq mi (4,437 km²) of land.

Sioux FallsRapid CityAberdeen
Brown County in South Dakota
Day CountyEdmunds CountyMcPherson CountyMarshall CountyAberdeenGrotonWarnerPrairiewood VillageHecla
Brown County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
37,561
Land area
1,713 sq mi (4,437 km²)
County seat or government
Aberdeen
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$70,898 ± $3,639
Median home value
$221,100 ± $13,102
Median rent, with utilities
$777 ± $36
Homes lived in by their owners
67.6% ± 2.7 points
County type
County
Metro or micro area
Aberdeen, SD micro areaCentral county
Water area
17.9 sq mi (46.4 km²)
State
South Dakota
County code (FIPS)
46013
Coordinates (central point)
45.589254, -98.352175
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Brown County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 5740131,939 people
  2. 574512,485 people
  3. 574452,072 people
  4. 584361,697 people
  5. 57441670 people
  6. 57479625 people
  7. 57432507 people
  8. 57434506 people
  9. 58439385 people
  10. 57427384 people
  11. 57449357 people
  12. 57433318 people
All 20
  1. 57461299 people
  2. 57481271 people
  3. 57460257 people
  4. 57474237 people
  5. 57446223 people
  6. 57422174 people
  7. 5742642 people
  8. 574390 people

20 ZIP Code areas overlap Brown County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Brown County, largest first

  1. Lincoln Township1,598 people
  2. Aberdeen Township548 people
  3. Prairiewood Township474 people
  4. Bath Township446 people
  5. Ravinia Township348 people
  6. Claremont Township291 people
  7. Warner Township282 people
  8. Greenfield Township270 people
  9. Lansing Township249 people
  10. Gem Township245 people
  11. East Rondell Township146 people
  12. Highland Township130 people
All 44
  1. Mercier Township121 people
  2. Ordway Township118 people
  3. Oneota Township107 people
  4. Groton Township98 people
  5. Brainard Township93 people
  6. Riverside Township93 people
  7. Garden Prairie Township91 people
  8. Shelby Township91 people
  9. Cambria Township89 people
  10. New Hope Township80 people
  11. Palmyra Township61 people
  12. Westport Township56 people
  13. West Rondell Township54 people
  14. Henry Township52 people
  15. Richland Township52 people
  16. Bates Township49 people
  17. East Hanson Township47 people
  18. Osceola Township44 people
  19. Columbia Township41 people
  20. Putney Township40 people
  21. Frederick Township39 people
  22. South Detroit Township30 people
  23. Franklyn Township28 people
  24. Portage Township21 people
  25. Garland Township20 people
  26. Liberty Township20 people
  27. Savo Township17 people
  28. Allison Township14 people
  29. Carlisle Township13 people
  30. West Hanson Township11 people
  31. Hecla Township0 people
  32. North Detroit Township0 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county

School districts in Brown County, largest first

  1. Aberdeen School District 06-132,231 people
  2. Groton Area School District 06-63,664 people
  3. Britton-Hecla School District 45-42,899 people
  4. Langford School District 45-51,785 people
  5. Northwestern Area School District 56-71,765 people
  6. Warner School District 06-51,158 people
  7. Frederick Area School District 06-2750 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Aberdeen, South Dakota (city)28,189 people
  2. Groton, South Dakota (city)1,691 people
  3. Warner, South Dakota (town)512 people
  4. Prairiewood Village, South Dakota (CDP)474 people
  5. Hecla, South Dakota (city)182 people
  6. Columbia, South Dakota (city)161 people
  7. Frederick, South Dakota (town)160 people
  8. Claremont, South Dakota (town)106 people
  9. Westport, South Dakota (town)93 people
  10. Bath, South Dakota (CDP)91 people
  11. Bath Corner, South Dakota (CDP)72 people
  12. Stratford, South Dakota (town)62 people
All 16
  1. Hutterville Colony, South Dakota (CDP)13 people
  2. Mansfield, South Dakota (CDP)12 people
  3. Verdon, South Dakota (town)4 people
  4. Ferney, South Dakota (CDP)0 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Dickey County, North Dakota36 mi north
  2. Marshall County, South Dakota39 mi east
  3. Day County, South Dakota41 mi southeast
  4. Edmunds County, South Dakota43 mi west
  5. McPherson County, South Dakota44 mi west
  6. Spink County, South Dakota46 mi south
  7. Sargent County, North Dakota50 mi northeast
  8. Faulk County, South Dakota53 mi southwest

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.