| Zip Code | City | Population ↓ |
|---|---|---|
| 66547 | Wamego | 8,379 |
| 66536 | Saint Marys | 4,098 |
| 66535 | Saint George | 3,543 |
| 66549 | Westmoreland | 1,427 |
| 66521 | Onaga | 1,417 |
| 66422 | Emmett | 1,185 |
| 66520 | Olsburg | 537 |
| 66432 | Havensville | 486 |
| 66407 | Belvue | 319 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Pottawatomie County, Kansas (US Census).