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/ISLAND-LAKE

Island Lake ZIP code, Illinois

The ZIP code for Island Lake, IL is 60042.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
8,014

Mail addressed to Island Lake 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.

Island Lake in numbers

About 8,014 people live in Island Lake, in 2,905 households. The median household income is $103,156 a year, 24% above the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $262,500 (about the same as the Illinois median), and median gross rent is $1,874 a month. The median age is 39.1; 30.4% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 32 minutes.

Population8,014Island Lake8,014
Households2,905Island Lake2,905
Median age39.1Island Lake39.1Illinois39.0US 38.9
Median household income$103,156Island Lake$103,156Illinois$83,390US $80,734
Median home value$262,500Island Lake$262,500Illinois$263,300US $332,700
Median gross rent$1,874Island Lake$1,874Illinois$1,274US $1,413
Bachelor's degree or higher30.4%Island Lake30.4%Illinois37.8%US 35.7%
Mean commute31.9 minIsland Lake31.9 minIllinois27.8 minUS 26.4 min
Population density2,379 / sq miIsland Lake2,379 / sq mi

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

ZIP codes addressed as Island Lake

ZIP codes with the USPS city name Island Lake
ZIP City Type Population Median income Median home
60042 Island Lake , IL Standard 8,347 $99,917 $259,100

Other ZIP codes overlapping Island Lake

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

ZIP codes overlapping Island Lake
ZIP City Type Population Median income Median home
60051 Mchenry , IL Standard 24,621 $100,762 $278,400
60084 Wauconda , IL Standard 17,192 $110,090 $303,200

Map of Island Lake ZIP codes

60042

The ZIP codes of Island Lake, 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 Island Lake

The nearest larger towns are Wauconda (14,027 people, 3.3 mi), Cary (17,923 people, 5.2 mi) and McHenry (28,074 people, 6.1 mi).

Towns near Island Lake
TownPopulationDistance
Wauconda 14,027 3.3 mi
Volo 6,706 4.2 mi
Lakemoor 6,467 4.2 mi
Lake Barrington 5,442 5.0 mi
Cary 17,923 5.2 mi
Fox River Grove 4,523 5.8 mi
McHenry 28,074 6.1 mi
North Barrington 3,143 6.2 mi
Round Lake 18,628 6.7 mi
Hawthorn Woods 9,143 7.4 mi
Round Lake Park 7,919 7.4 mi
Long Lake 3,307 7.5 mi
Crystal Lake 40,579 7.5 mi
Johnsburg 6,386 7.6 mi

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

Cite this page

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

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