ZIP Code 60045

60045 is one of Illinois's ZIP codes, delivering to addresses in Lake Forest, Lake County.

City: Lake Forest
County: Lake County
State: Illinois
Prefix: 600xx

Where this code sits

60045 is part of the 600xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Lake Forest.

Lake Forest Illinois ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 60045 delivers to without sharing its boundary.

ZIP codes nearest 60045

The ZIP codes whose reference points sit closest to 60045.
ZIP code	Distance	Delivers to
ZIP code 60037	2.9 mi	Fort Sheridan, IL
ZIP code 60040	2.9 mi	Highwood, IL
ZIP code 60044	3.1 mi	Lake Bluff, IL
ZIP code 60035	4.6 mi	Highland Park, IL
ZIP code 60088	4.6 mi	Great Lakes, IL
ZIP code 60015	4.7 mi	Deerfield, IL
ZIP code 60069	4.8 mi	Lincolnshire, IL
ZIP code 60048	6.0 mi	Libertyville, IL

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 60045, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 60045. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.