9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 66512 | Meriden | 3,476 |
| 66066 | Oskaloosa | 2,750 |
| 66088 | Valley Falls | 2,723 |
| 66054 | McLouth | 2,653 |
| 66073 | Perry | 2,381 |
| 66070 | Ozawkie | 1,974 |
| 66060 | Nortonville | 1,255 |
| 66097 | Winchester | 939 |
| 66429 | Grantville | 381 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Jefferson County, Kansas (US Census).