Lake Forest city, Illinois
Official LSAD Designation: Lake Forest city • Census GEOID: 1741105
• Lake County
Lake Forest city is an incorporated city in Lake County, Illinois. According to official records from the Census (2025), Lake Forest city had an estimated population of 19,731 residents. Official Census Bureau geographic records classify this community under LSAD designation Lake Forest city (GEOID 1741105).
Local Government Administration U.S. Census Bureau GMAF
City Of Lake Forest
Municipal
Official Title:
Deputy City Clerk
Address:
220 E DEERPATH, LAKE FOREST IL 60045-1914
County Of Lake
County
Official Title:
Deputy Finance Director
Address:
18 N COUNTY ST, 9TH FL, WAUKEGAN IL 60085-4304
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 19,731 | 2025 |
| Median Household Income | $235,081 | 2020-2024 |
| Median Home Value | $938,300 | 2020-2024 |
| Land Area | 17.20 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).