Erwin ZIP code, South Dakota
The ZIP code for Erwin, SD is 57233, and its area code is 605.
- USPS city name
- 1 ZIP code
- Population
- 105
- Area code
- 605
- County
- Kingsbury County
- State
- South Dakota
NANPA lists no telephone rate centre for Erwin itself, so these are the area codes of the nearest one, Lake Preston (8.9 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes addressed as Erwin
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57233 | Erwin , SD | Standard | 350 | $82,917 | — |
Map of Erwin ZIP codes
The ZIP codes of Erwin, 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 Erwin
The nearest larger towns are Bryant (727 people, 7.2 mi), De Smet (943 people, 8.9 mi) and Lake Preston (596 people, 9.3 mi).
More nearby: every ZIP code in Kingsbury County · South Dakota ZIP codes
Cite this page
zipcodes.pro. “Erwin, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/erwin
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