ZIP CodesZIP codes in Custer County, South Dakota
Custer County, South Dakota has 5 ZIP codes in this list, from 57722 to 57773. They cover 5 places, among them Buffalo Gap, Custer, Fairburn and Hermosa.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 57722 | Buffalo Gap | 545 | 43.496, -103.316 |
| 57730 | Custer | 516 | 43.657, -103.426 |
| 57738 | Fairburn | 185 | 43.662, -103.213 |
| 57744 | Hermosa | 479 | 43.819, -103.206 |
| 57773 | Pringle | 6.0 | 43.609, -103.594 |
The ZIP code areas of Custer County add up to about 1,731 square miles of land (4,482 sq km) as the Census Bureau draws them. The largest is 57722 (Buffalo Gap), with 545 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Buffalo Gap, SD 57722.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.