Lake Forest, IL ZIP Codes

ZIP code, county, time zone and coordinates of Lake Forest, Illinois

The ZIP code of Lake Forest, IL is 60045. Lake Forest has 2 ZIP codes: 60045, 60040. It is in Lake County.

Mailing address format for Lake Forest

John Smith
123 Main St
LAKE FOREST IL 60045
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

All ZIP codes in Lake Forest

ZIP codePopulationArea
60045—21.3 sq miMain
60040—0.8 sq mi

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

Where is Lake Forest? Location, county and time zone

State
Illinois
County
Lake County
GPS coordinates
42.23535, -87.85731
Elevation
663 ft (202 m)
Time zone
America/ChicagoCST · UTC-06:00
Population
19,367

Map of Lake Forest, IL 60045

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ZIP codes near Lake Forest

Lake Forest ZIP code: FAQ

What is the ZIP code for Lake Forest, IL?

The main ZIP code for Lake Forest, IL is 60045. All ZIP codes: 60045, 60040.

How many ZIP codes does Lake Forest have?

Lake Forest has 2 ZIP codes.

What county is Lake Forest, IL in?

Lake Forest is in Lake County, Illinois.

What time zone is Lake Forest in?

Lake Forest is in the America/Chicago time zone (CST, UTC-06:00 right now).

What are the coordinates of Lake Forest?

Latitude 42.23535, longitude -87.85731.

Last updated: