| 1,634 | (20%) | |
| 1,534 | (19%) | |
| 1,438 | (18%) | |
| 1,086 | (13%) | |
| 832 | (10%) | |
| 357 | (4%) | |
| 329 | (4%) | |
| 308 | (4%) | |
| 258 | (3%) | |
| 173 | (2%) | |
| 24 | (0%) |
Source: U.S. Census Bureau - A.C.S 2007
| 20,113 | (100%) | |
| 19,226 | (96%) | |
| 746 | (4%) | |
| 192 | (1%) |
Lake Forest Illinois's population is estimated to be approximately 20,113. There are 19,226 White residents which make up 95.60 % of the states' population. The remaining population is made up of 746 Asians, 192 Others.