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Below is information on the population, racial profile, house hold count, and sex/age profiles for the city of Lake Forest. These results are gathered once every 10 years and may not be 100% accurate or up to date.
The population for Lake Forest, Illinois is approximatly 20059.
Racial profile for Lake Forest:
| White : | 18815 |
| Black : | 271 |
| Native American : | 12 |
| Asian : | 692 |
| Pacific Islander : | 26 |
| Other : | 89 |
| * results may not accumulate to total population due to mixed race individuals | |
Population by age for males in Lake Forest, Illinois :
| 18 - 19 : | 329 |
| 20 : | 130 |
| 21 : | 155 |
| 22 - 24 : | 232 |
| 25 - 29 : | 189 |
| 30 - 34 : | 292 |
| 35 - 39 : | 522 |
| 40 - 44 : | 773 |
| 45 - 49 : | 833 |
| 50 - 54 : | 872 |
| 55 - 59 : | 679 |
| 60 - 61 : | 215 |
| 62 - 64 : | 248 |
| 65 - 66 : | 144 |
| 67 - 69 : | 231 |
| 70 - 74 : | 322 |
| 75 - 79 : | 281 |
| 80 - 84 : | 191 |
| 85+ : | 104 |
Population by age for females in Lake Forest, Illinois :
| 18 - 19 : | 428 |
| 20 : | 228 |
| 21 : | 194 |
| 22 - 24 : | 229 |
| 25 - 29 : | 215 |
| 30 - 34 : | 361 |
| 35 - 39 : | 707 |
| 40 - 44 : | 902 |
| 45 - 49 : | 941 |
| 50 - 54 : | 842 |
| 55 - 59 : | 654 |
| 60 - 61 : | 179 |
| 62 - 64 : | 265 |
| 65 - 66 : | 138 |
| 67 - 69 : | 231 |
| 70 - 74 : | 419 |
| 75 - 79 : | 378 |
| 80 - 84 : | 253 |
| 85+ : | 233 |
The total amount of households in Lake Forest, Illinois is 6687. With 18587 people of the population in these households. The average household size is 2.78.
16918 people in Lake Forest, Illinois are part of a family. The average family size in Lake Forest is 3.17 people.
There are 5097 married families in Lake Forest, Illinois.
Number of married families by number of members in the family :
| 0 - 2 : | 616 | 3 - 4 : | 525 | 5 : | 283 | 6 - 11 : | 1888 | 12 - 17 : | 1785 |