| County : | Lake County |
| State : | Indiana (IN) |
| Land Area : | 498.96 sq mi |
| Water Area : | 127.60 sq mi |
| Latitude : | 41.4722388 |
| Longitude : | -87.3743368 |
| Population (2010): | 496,005 |
| Population Estimate (2012) : | 495,230 |
| Population Density : | 994.08/sq mi |
| Housing Units (2012) : | 208,750 |
| Median Household Income (2012) : | $49,315 (Indiana : $48,374, USA : $53,046) |
| Median Family Income (2012) : | $60,012 (Indiana : $60,012, USA : $64,585) |
| Median House Price (2012) : | $137,400 (Indiana : $123,400, USA : $181,400) |
Lake County Cities / Towns
| Cedar Lake Town (11,560) | Crown Point City (27,317) | Dyer Town (16,390) |
| East Chicago City (29,698) | Gary City (80,294) | Griffith Town (16,893) |
| Hammond City (80,830) | Highland Town (23,727) | Hobart City (29,059) |
| Lake Dalecarlia (1,355) | Lakes of The Four Seasons (7,033) | Lake Station City (12,572) |
| Lowell Town (9,276) | Merrillville Town (35,246) | Munster Town (23,603) |
| New Chicago Town (2,035) | St. John Town (14,850) | Schererville Town (29,243) |
| Schneider Town (277) | Shelby (539) | Whiting City (4,997) |
| Winfield Town (4,383) |
Lake County Zip Codes
| 46303 (14,170) | 46307 (60,619) | 46311 (20,816) |
| 46312 (29,698) | 46319 (18,404) | 46320 (15,508) |
| 46321 (23,603) | 46322 (23,727) | 46323 (22,743) |
| 46324 (23,165) | 46327 (12,153) | 46341 (10,426) |
| 46342 (31,244) | 46356 (17,524) | 46373 (13,859) |
| 46375 (23,820) | 46376 (398) | 46377 (386) |
| 46394 (12,258) | 46402 (6,726) | 46403 (12,601) |
| 46404 (17,326) | 46405 (11,746) | 46406 (9,900) |
| 46407 (12,656) | 46408 (17,030) | 46409 (8,932) |
| 46410 (38,340) |