Lake Forest, Illinois
Lake Forest is a city in Lake County, Illinois, with an estimated population of 19,354 in 2023. It sits at 42.2353, -87.8573 in the America/Chicago time zone.
| Field | Value |
|---|---|
| Place name | Lake Forest |
| Type | city |
| State | Illinois (IL) |
| County | Lake County |
| Population (2023 est.) | 19,354 |
| Land area | 17.20 sq mi (44.55 km²) |
| Coordinates | 42.2353, -87.8573 |
| Time zone | America/Chicago |
| ZIP codes | 60045 |
| Telephone area codes | 224, 847 |
ZIP codes and area codes for Lake Forest
Lake Forest covers 1 ZIP code: 60045. Telephone area codes serving the area: 224, 847. Browse all ZIP codes in Illinois for the full list.
Where is Lake Forest?
Lake Forest is located in Illinois, in Lake County. The coordinates above can be pasted directly into any map service. The nearest indexed places are listed below, which is a useful check when two states share a place name.
Nearby places
Highwood 5 km · ILBannockburn 5 km · ILLake Bluff 5 km · ILMettawa 5 km · ILLincolnshire 7 km · ILHighland Park 7 km · ILRiverwoods 8 km · ILDeerfield 8 km · IL
Other places in Lake County
Waukegan 87,642Buffalo Grove 42,482Mundelein 31,790North Chicago 30,416Highland Park 30,272Gurnee 30,193Round Lake Beach 26,783Vernon Hills 26,677Zion 24,206Grayslake 20,954
Related
Frequently asked questions
What county is Lake Forest, IL in?
Lake Forest is in Lake County, Illinois.
What is the population of Lake Forest, IL?
The 2023 Census Bureau estimate is 19,354.
What time zone is Lake Forest in?
Lake Forest is in the America/Chicago time zone.