| Post Office | Crown Point |
| Division | Lake |
| Pincode | 46307 |
| Post Office | Merrillville |
| Division | Lake |
| Pincode | 46410 |
| Post Office | Hobart |
| Division | Lake |
| Pincode | 46342 |
| Post Office | East Chicago |
| Division | Lake |
| Pincode | 46312 |
| Post Office | Schererville |
| Division | Lake |
| Pincode | 46375 |
| Post Office | Munster |
| Division | Lake |
| Pincode | 46321 |
| Post Office | Hammond |
| Division | Lake |
| Pincode | 46323 |
| Post Office | Highland |
| Division | Lake |
| Pincode | 46322 |
| Post Office | Dyer |
| Division | Lake |
| Pincode | 46311 |
19 City in Lake | List of Zip Codes Location In Indiana and Your selected County Lake