12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 46350 | La Porte | 45,152 |
| 46360 | Michigan City | 43,997 |
| 46391 | Westville | 8,555 |
| 46574 | Walkerton | 7,414 |
| 46371 | Rolling Prairie | 3,490 |
| 46390 | Wanatah | 2,965 |
| 46382 | Union Mills | 1,833 |
| 46340 | Hanna | 1,531 |
| 46346 | Kingsford Heights | 1,313 |
| 46348 | La Crosse | 1,201 |
| 46365 | Mill Creek | 911 |
| 46345 | Kingsbury | 76 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in LaPorte County, Indiana (US Census).