Island Lake is a village in Lake County, Illinois, home to about 8,014 people across 3.4 square miles. Its ZIP code is 60042.
Homes sold for a median of $205 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Island Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Island Lake’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Chicago O'Hare International Airport (ORD)25 miles away |
|---|---|
| Nearest city of 250,000+ | Chicago, IL40 miles away |
Straight-line distances from the center of Island Lake; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Island Lake had 8,051 residents in the 2020 census, down 1% since 2000.
It’s the 263rd largest of 1,450 towns in Illinois by population.
Lake County grew from 34,504 residents in 1900 to 714,342 in 2020.
Lake County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 84°F in summer, and winter lows average 13°F. About 37 inches of rain and melted snow fall in a typical year, with about 35 inches of snow.
Source: NOAA 1991–2020 climate normals, Mc Henry -Wg Stratton L&D, IL weather station (4 miles away).
337,069 jobs at 20,076 businesses in Lake County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
18 doctors and other health care providers list an office in Island Lake.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Dentists | 1 |
| Mental health providers | 8 |
| Physical and occupational therapists | 3 |
| Chiropractors | 5 |
| Pharmacies | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (3 nearby)
Grocery stores (1 nearby)
Pharmacies
Libraries
Museums
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Wauconda CUSD 118. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Cotton Creek SchoolIsland Lake | Pre-K–5 | 580 | Public | 0.8 mi |
| Matthews Middle SchoolIsland Lake | 6–8 | 451 | Public | 0.7 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.