ZIP code · Saint Charles · South Dakota · United States
ZIP code 57571 — Saint Charles
ZIP code 57571 serves Saint Charles, South Dakota.
- Postal code
- 57571Single source Value from one source, not cross-checked.
- City
- Saint Charles
- County
- Gregory
- State
- South Dakota
- Country
- United States
- Coordinates
- 43.0852, -99.0925 — precision precise (locality)
View on OpenStreetMap - Population
- 39 (ZCTA, ACS 5-year)
- Median age
- 58.8
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
Nearby localities
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS). Data generated on 2026-08-21. Methodology · Report an error on this page