St. Charles ZIP code, South Dakota
The ZIP code for St. Charles, SD is 57571, and its area code is 605.
- USPS city name
- 1 ZIP code
- Population
- 6
- Area code
- 605
- County
- Gregory County
- State
- South Dakota
Also written Saint Charles, the spelling the Postal Service uses.
NANPA lists no telephone rate centre for St. Charles itself, so these are the area codes of the nearest one, Bonesteel (9.4 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes addressed as Saint Charles
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57571 | Saint Charles , SD | Standard | 22 | — | — |
Map of St. Charles ZIP codes
The ZIP codes of St. Charles, SD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near St. Charles
The nearest larger towns are Herrick (73 people, 5.1 mi), Bonesteel (286 people, 7.5 mi) and Naper, NE (117 people, 8.6 mi).
More nearby: every ZIP code in Gregory County · South Dakota ZIP codes
Cite this page
zipcodes.pro. “St. Charles, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/st-charles
Underlying data is public domain or openly licensed — sources, vintages and licences.