16 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 51503 | Council Bluffs | 37,972 |
| 51501 | Council Bluffs | 34,618 |
| 51510 | Carter Lake | 3,767 |
| 51521 | Avoca | 1,953 |
| 51559 | Neola | 1,841 |
| 51560 | Oakland | 1,772 |
| 51576 | Underwood | 1,769 |
| 51526 | Crescent | 1,664 |
| 51575 | Treynor | 1,609 |
| 51577 | Walnut | 1,561 |
| 51525 | Carson | 1,067 |
| 51553 | Minden | 998 |
| 51542 | Honey Creek | 802 |
| 51536 | Hancock | 613 |
| 51548 | McClelland | 415 |
| 51549 | Macedonia | 363 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 16 ZCTAs in Pottawattamie County, Iowa (US Census).