5 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 68666 | Stromsburg | 1,598 |
| 68651 | Osceola | 1,293 |
| 68662 | Shelby | 1,126 |
| 68654 | Polk | 528 |
| 68367 | Gresham | 335 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 5 ZCTAs in Polk County, Nebraska (US Census).