There are 9 zip codes in Porter County, Indiana. The most populated is 46383, located in Valparaiso. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
|---|---|---|
| 46383 | Valparaiso | 41,811 |
| 46385 | Valparaiso | 41,304 |
| 46368 | Portage | 39,947 |
| 46304 | Chesterton | 27,204 |
| 46341 | Hebron | 9,984 |
| 46347 | Kouts | 4,853 |
| 46301 | Beverly Shores | 578 |
| 46393 | Wheeler | 148 |
| 46302 | Boone Grove | 51 |