8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 43302 | Marion | 53,702 |
| 43342 | Prospect | 3,836 |
| 43314 | Caledonia | 2,438 |
| 43332 | La Rue | 2,173 |
| 43356 | Waldo | 1,120 |
| 43341 | New Bloomington | 953 |
| 43337 | Morral | 625 |
| 43322 | Green Camp | 437 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Marion County, Ohio (US Census).