Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/IL/LAKE-FOREST

Lake Forest ZIP code, Illinois

The ZIP code for Lake Forest, IL is 60045, and its area codes are 847 and 224.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
19,416
Area codes
847, 224

Mail addressed to Lake Forest uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Lake Forest in numbers

About 19,416 people live in Lake Forest, in 6,900 households. The median household income is $235,081 a year, 2.8 times the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $938,300 (3.6 times the Illinois median), and median gross rent is $1,815 a month. The median age is 46.1; 80.5% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 31 minutes.

Population19,416Lake Forest19,416
Households6,900Lake Forest6,900
Median age46.1Lake Forest46.1Illinois39.0US 38.9
Median household income$235,081Lake Forest$235,081Illinois$83,390US $80,734
Median home value$938,300Lake Forest$938,300Illinois$263,300US $332,700
Median gross rent$1,815Lake Forest$1,815Illinois$1,274US $1,413
Bachelor's degree or higher80.5%Lake Forest80.5%Illinois37.8%US 35.7%
Mean commute31.3 minLake Forest31.3 minIllinois27.8 minUS 26.4 min
Population density1,129 / sq miLake Forest1,129 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Lake Forest city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Lake Forest

ZIP codes with the USPS city name Lake Forest
ZIP City Type Population Median income Median home
60045 Lake Forest , IL Standard 21,074 $233,125 $923,500

Other ZIP codes overlapping Lake Forest

These ZIP codes cover part of Lake Forest but are addressed as somewhere else.

ZIP codes overlapping Lake Forest
ZIP City Type Population Median income Median home
60035 Highland Park , IL Standard 30,398 $168,094 $607,300
60040 Highwood , IL Standard 5,301 $107,875 $405,400

Map of Lake Forest ZIP codes

60045

The ZIP codes of Lake Forest, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Lake Forest

The nearest larger towns are Highland Park (30,398 people, 4.4 mi), Deerfield (19,518 people, 4.8 mi) and Vernon Hills (26,876 people, 5.3 mi).

Towns near Lake Forest
TownPopulationDistance
Highwood 5,301 3.0 mi
Lake Bluff 6,041 3.3 mi
Lincolnshire 7,980 4.1 mi
Highland Park 30,398 4.4 mi
Riverwoods 4,013 4.7 mi
Deerfield 19,518 4.8 mi
Green Oaks 4,096 5.2 mi
Vernon Hills 26,876 5.3 mi
North Chicago 30,643 5.6 mi
Libertyville 20,525 6.5 mi
Buffalo Grove 42,891 7.2 mi
Northbrook 34,585 7.5 mi
Wheeling 38,433 8.0 mi
Long Grove 8,305 8.3 mi

More nearby: every ZIP code in Lake County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Lake Forest, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/lake-forest

Underlying data is public domain or openly licensed — sources, vintages and licences.