Sanborn County, South Dakota

Sanborn County, South Dakota, has 2,388 residents (July 2025 estimate). Its county seat is Woonsocket. It uses Central Time and covers 569 sq mi (1,474 km²) of land.

Sioux FallsRapid CityAberdeen
Sanborn County in South Dakota
WoonsocketLetcherArtesianForestburgUpland Colony
Sanborn County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
2,388
Land area
569 sq mi (1,474 km²)
County seat or government
Woonsocket
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$78,750 ± $8,864
Median home value
$135,600 ± $34,581
Median rent, with utilities
$725 ± $103
Homes lived in by their owners
78.6% ± 4.6 points
County type
County
Metro or micro area
Mitchell, SD micro areaOutlying county
Water area
1.21 sq mi (3.13 km²)
State
South Dakota
County code (FIPS)
46111
Coordinates (central point)
44.018942, -98.091709

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 Sanborn 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. 5735016,199 people
  2. 573851,408 people
  3. 57363866 people
  4. 57359652 people
  5. 57312596 people
  6. 57314572 people
  7. 57337130 people
  8. 57323126 people

8 ZIP Code areas overlap Sanborn 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

Sanborn County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Sanborn County, largest first

  1. Logan Township194 people
  2. Woonsocket Township184 people
  3. Butler Township169 people
  4. Elliott Township121 people
  5. Letcher Township102 people
  6. Jackson Township99 people
  7. Silver Creek Township97 people
  8. Union Township89 people
  9. Twin Lake Township75 people
  10. Floyd Township61 people
  11. Afton Township40 people
  12. Benedict Township23 people
All 16
  1. Warren Township18 people
  2. Diana Township15 people
  3. Ravenna Township12 people
  4. Oneida Township7 people

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

School districts in Sanborn County, largest first

  1. Huron School District 02-216,543 people
  2. Wessington Springs School District 36-21,496 people
  3. Woonsocket School District 55-41,348 people
  4. Sanborn Central School District 55-51,080 people
  5. Mount Vernon School District 17-3909 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. Woonsocket, South Dakota (city)759 people
  2. Letcher, South Dakota (town)171 people
  3. Artesian, South Dakota (town)148 people
  4. Forestburg, South Dakota (CDP)113 people
  5. Upland Colony, South Dakota (CDP)30 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Davison County, South Dakota24 mi south
  2. Miner County, South Dakota24 mi east
  3. Jerauld County, South Dakota27 mi west
  4. Hanson County, South Dakota28 mi southeast
  5. Beadle County, South Dakota29 mi north
  6. Aurora County, South Dakota32 mi southwest
  7. Kingsbury County, South Dakota38 mi northeast

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.