Clay County, South Dakota
Clay County, South Dakota, has 15,031 residents (July 2025 estimate). Its county seat is Vermillion. It uses Central Time and covers 412 sq mi (1,067 km²) of land.
- Resident population, July 2025
- 15,031
- Land area
- 412 sq mi (1,067 km²)
- County seat or government
- Vermillion
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $56,850 ± $5,165
- Median home value
- $232,300 ± $23,314
- Median rent, with utilities
- $770 ± $55
- Homes lived in by their owners
- 50.8% ± 3.0 points
- County type
- County
- Metro or micro area
- Vermillion, SD micro areaCentral county
- Water area
- 5.4 sq mi (14 km²)
- State
- South Dakota
- County code (FIPS)
- 46027
- Coordinates (central point)
- 42.916150, -96.980468
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 Clay 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
- 5706913,091 people
- 570043,834 people
- 570141,667 people
- 57037925 people
- 57031784 people
- 57010755 people
- 57073564 people
- 57072435 people
8 ZIP Code areas overlap Clay 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 Clay County, largest first
- Fairview Township535 people
- Garfield Township317 people
- Prairie Center Township314 people
- Meckling Township273 people
- Glenwood Township268 people
- Vermillion Township242 people
- Spirit Mound Township207 people
- Riverside Township161 people
- Norway Township126 people
- Pleasant Valley Township99 people
- Star Township98 people
- Bethel Township89 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in South Dakota, by county
School districts in Clay County, largest first
- Vermillion School District 13-113,340 people
- Beresford School District 61-24,034 people
- Viborg Hurley School District 60-62,414 people
- Irene-Wakonda School District 13-31,767 people
- Centerville School District 60-11,751 people
- Gayville-Volin School District 63-11,165 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.
- Vermillion, South Dakota (city)11,878 people
- Irene, South Dakota (city)456 people
- Wakonda, South Dakota (town)399 people
- Burbank, South Dakota (CDP)110 people
- Meckling, South Dakota (CDP)69 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Union County, South Dakota18 mi east
- Yankton County, South Dakota22 mi west
- Cedar County, Nebraska26 mi southwest
- Lincoln County, South Dakota28 mi northeast
- Turner County, South Dakota28 mi north
- Dixon County, Nebraska30 mi south
Before using this answer on a form
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