Frankfort ZIP code, South Dakota
The ZIP code for Frankfort, SD is 57440, and its area code is 605.
- USPS city name
- 1 ZIP code
- Population
- 128
- Area code
- 605
- County
- Spink County
- State
- South Dakota
NANPA lists no telephone rate centre for Frankfort itself, so these are the area codes of the nearest one, Doland (8.9 miles). A town on an area-code boundary can differ from its neighbour.
ZIP codes addressed as Frankfort
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
57440 | Frankfort , SD | Standard | 466 | $54,625 | $132,800 |
Map of Frankfort ZIP codes
The ZIP codes of Frankfort, 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 Frankfort
The nearest larger towns are Redfield (1,989 people, 10 mi), Doland (209 people, 10 mi) and Ashton (204 people, 12 mi).
More nearby: every ZIP code in Spink County · South Dakota ZIP codes
Cite this page
zipcodes.pro. “Frankfort, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/frankfort
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