Day County, South Dakota
Day County is a county in South Dakota. Its county FIPS code is 46037. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 46037
- Representative coordinates
- 45.355161, -97.581430
- County type
- County
- County seat or government
- Webster
- Resident population, July 2025
- 5,484
- Land area
- 2,663.776 km²
- Water area
- 162.141 km²
- State
- South Dakota
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Day County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
57219 · 57235 · 57239 · 57256 · 57261 · 57273 · 57274 · 57422 · 57434 · 57454 · 57468
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
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 at your current point, check its ZIP area, or find its physical time zone.