5 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 68666 | Stromsburg | 1,608 |
| 68651 | Osceola | 1,224 |
| 68662 | Shelby | 1,192 |
| 68654 | Polk | 563 |
| 68367 | Gresham | 379 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 5 ZCTAs in Polk County, Nebraska (US Census).