4 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 47620 | Mount Vernon | 12,738 |
| 47638 | Wadesville | 3,529 |
| 47633 | Poseyville | 2,274 |
| 47631 | New Harmony | 2,097 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 4 ZCTAs in Posey County, Indiana (US Census).