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.
- 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 zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-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
- 5735016,199 people
- 573851,408 people
- 57363866 people
- 57359652 people
- 57312596 people
- 57314572 people
- 57337130 people
- 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
- Logan Township194 people
- Woonsocket Township184 people
- Butler Township169 people
- Elliott Township121 people
- Letcher Township102 people
- Jackson Township99 people
- Silver Creek Township97 people
- Union Township89 people
- Twin Lake Township75 people
- Floyd Township61 people
- Afton Township40 people
- Benedict Township23 people
All 16
- Warren Township18 people
- Diana Township15 people
- Ravenna Township12 people
- 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
- Huron School District 02-216,543 people
- Wessington Springs School District 36-21,496 people
- Woonsocket School District 55-41,348 people
- Sanborn Central School District 55-51,080 people
- 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.
- Woonsocket, South Dakota (city)759 people
- Letcher, South Dakota (town)171 people
- Artesian, South Dakota (town)148 people
- Forestburg, South Dakota (CDP)113 people
- Upland Colony, South Dakota (CDP)30 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Davison County, South Dakota24 mi south
- Miner County, South Dakota24 mi east
- Jerauld County, South Dakota27 mi west
- Hanson County, South Dakota28 mi southeast
- Beadle County, South Dakota29 mi north
- Aurora County, South Dakota32 mi southwest
- 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.
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