12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 46350 | La Porte | 44,923 |
| 46360 | Michigan City | 43,891 |
| 46391 | Westville | 9,369 |
| 46574 | Walkerton | 7,542 |
| 46371 | Rolling Prairie | 3,525 |
| 46390 | Wanatah | 3,172 |
| 46382 | Union Mills | 1,932 |
| 46346 | Kingsford Heights | 1,391 |
| 46340 | Hanna | 1,330 |
| 46348 | La Crosse | 1,066 |
| 46365 | Mill Creek | 838 |
| 46345 | Kingsbury | 77 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in LaPorte County, Indiana (US Census).