| Zip Code | City | Population ↓ |
|---|---|---|
| 55307 | Arlington | 3,342 |
| 55334 | Gaylord | 2,754 |
| 55396 | Winthrop | 2,135 |
| 56044 | Henderson | 2,095 |
| 55335 | Gibbon | 1,617 |
| 55338 | Green Isle | 1,066 |
| 55366 | New Auburn | 460 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Sibley County, Minnesota (US Census).