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Lake ZIP Codes — Indiana (IN)
| City or Location | County or District | States or Territories | States or Territories Abbrieviation | ZIP Code or Postcode |
|---|---|---|---|---|
| Cedar Lake | Lake | Indiana | IN | 46303 |
| Crown Point | Lake | Indiana | IN | 46307 |
| Crown Point | Lake | Indiana | IN | 46308 |
| Dyer | Lake | Indiana | IN | 46311 |
| East Chicago | Lake | Indiana | IN | 46312 |
| Griffith | Lake | Indiana | IN | 46319 |
| Hammond | Lake | Indiana | IN | 46320 |
| Munster | Lake | Indiana | IN | 46321 |
| Highland | Lake | Indiana | IN | 46322 |
| Hammond | Lake | Indiana | IN | 46323 |
| Hammond | Lake | Indiana | IN | 46324 |
| Hammond | Lake | Indiana | IN | 46325 |
| Hammond | Lake | Indiana | IN | 46327 |
| Hobart | Lake | Indiana | IN | 46342 |
| Leroy | Lake | Indiana | IN | 46355 |
| Lowell | Lake | Indiana | IN | 46356 |
| Saint John | Lake | Indiana | IN | 46373 |
| Schererville | Lake | Indiana | IN | 46375 |
| Schneider | Lake | Indiana | IN | 46376 |
| Shelby | Lake | Indiana | IN | 46377 |
| Whiting | Lake | Indiana | IN | 46394 |
| Gary | Lake | Indiana | IN | 46401 |
| Gary | Lake | Indiana | IN | 46402 |
| Gary | Lake | Indiana | IN | 46403 |
| Gary | Lake | Indiana | IN | 46404 |
| Lake Station | Lake | Indiana | IN | 46405 |
| Gary | Lake | Indiana | IN | 46406 |
| Gary | Lake | Indiana | IN | 46407 |
| Gary | Lake | Indiana | IN | 46408 |
| Gary | Lake | Indiana | IN | 46409 |
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