| City : | Lake Forest City |
| County : | Lake County |
| State : | Illinois (IL) |
| | |
| Land Area : | 17.18 sq mi |
| Water Area : | 0.07 sq mi |
| Latitude : | 42.2379029 |
| Longitude : | -87.8589479 |
| | |
| Population (2010): | 19,375 |
| Population Estimate (2012) : | 19,068 |
| Population Density : | 1,127.93/sq mi |
| Housing Units (2012) : | 7,444 |
| Median Household Income (2012) : | $136,583 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $163,926 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $866,200 (Illinois : $190,800, USA : $181,400) |