Illinois · United States
Lake Forest population
19,408people · latest figure
Lake Forest has a population of 19,408, making it the 2299th largest place we list in United States. It is in Illinois.
Lake Forest holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 454 times its size.
19,408
population
#2,299
Lake Forest is in Illinois, which has 945 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Angleton | Texas | 19,429 |
| Fernley | Nevada | 19,418 |
| Alice | Texas | 19,408 |
| Battle Ground | Washington | 19,407 |
| Forest Park | Georgia | 19,383 |
| Mamaroneck | New York | 19,375 |
All places in United States → · Illinois →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.