7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 66967 | Smith Center | 2,017 |
| 66951 | Kensington | 820 |
| 66952 | Lebanon | 368 |
| 67474 | Portis | 211 |
| 67628 | Cedar | 171 |
| 67638 | Gaylord | 113 |
| 66932 | Athol | 74 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Smith County, Kansas (US Census).