The most populated Zip Code in Posey County, Indiana is 47620, located in Mount Vernon. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
|---|---|---|
| 47620 | Mount Vernon | 12,738 |
| 47638 | Wadesville | 3,529 |
| 47633 | Poseyville | 2,274 |
| 47631 | New Harmony | 2,097 |