Cities and Towns in Lake County, Indiana
Founded on Jan 28, 1837, Lake County is one of 92 counties in the state of Indiana. Historically, Lake County was formed from Newton and Porter Counties. The city of Crown Point is the county seat. With FIPS code of 89, Lake County has a population of 498,558 and area of 499 square miles (1,292 km²).
List of all cities in Lake County, IN alphabetically
| City/Town | Postal Code | Area Code |
| Belshaw, IN | 46356 | 219 |
| Brunswick, IN | 46406 | 219 |
| Cedar Lake, IN | 46303 | 219 |
| Creston, IN | 46356 | 219 |
| Crown Point, IN | 46307 | 219 |
| 46308 | 219 | |
| Dyer, IN | 46311 | 219 |
| 46373 | 219 | |
| East Chicago, IN | 46312 | 219 |
| Gary, IN | 46401 | 219 |
| 46402 | 219 | |
| 46403 | 219 | |
| 46404 | 219 | |
| 46405 | 219 | |
| 46406 | 219 | |
| 46407 | 219 | |
| 46408 | 219 | |
| 46409 | 219 | |
| 46410 | 219 | |
| 46411 | 219 | |
| Griffith, IN | 46319 | 219 |
| Hammond, IN | 46320 | 219 |
| 46321 | 219 | |
| 46322 | 219 | |
| 46323 | 219 | |
| 46324 | 219 | |
| 46325 | 219 | |
| 46327 | 219 | |
| Hessville, IN | 46323 | 219 |
| Highland, IN | 46322 | 219 |
| Hobart, IN | 46342 | 219 |
| Lake Dalecarlia, IN | 46356 | 219 |
| Lake Station, IN | 46405 | 219 |
| Lakes of Four Seasons, IN | 46307 | 219 |
| Leroy, IN | 46355 | 219 |
| Lowell, IN | 46356 | 219 |
| Merrillville, IN | 46410 | 219 |
| 46411 | 219 | |
| Munster, IN | 46321 | 219 |
| New Chicago, IN | 46342 | 219 |
| New Elliott, IN | 46319 | 219 |
| North Hayden, IN | 46356 | 219 |
| Palmer, IN | 46307 | 219 |
| Robertsdale, IN | 46394 | 219 |
| Saint John, IN | 46373 | 219 |
| Schererville, IN | 46375 | 219 |
| Schneider, IN | 46376 | 219 |
| Shelby, IN | 46377 | 219 |
| South Calumet Avenue, IN | 46324 | 219 |
| Whiting, IN | 46394 | 219 |
