Lake Forest Flag

Lake Forest

County:
Lake County
County Seat:
No
Area (mi²):
17.201
State:
Illinois

Lake Forest is a city located in Lake County, Illinois. Lake Forest has a 2026 population of 19,642. Lake Forest is currently growing at a rate of 0.73% annually and its population has increased by 1.51% since the most recent census, which recorded a population of 19,349 in 2020.

19.6K
Total Population
1,142
Density (mi²)
143 0.73%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)