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The median home value in Island Lake, IL is $309,980 as of 2026-06-30, up 6.52% from a year earlier.
Median Home Value
$309,980
Year-over-Year
+6.52%
Population
7,978
Island Lake ranks #147 of 279 Illinois cities tracked here by median home value, and sits 2.7% below the state's city median of $318,423. It sits in McHenry County, where the county-wide median is $371,681.
Island Lake police recorded a violent crime rate of 63 per 100,000 residents in 2024 — lower than most cities that report to the FBI. Property crime runs at 526 per 100,000.
Reported by the city's own police department to the FBI's Uniform Crime Reporting Program (what this covers).
The median home value in Island Lake is $309,980. That's up 6.52% from a year earlier. That is about 2.7% below the typical county in Illinois.
Homes in Island Lake are cheaper than McHenry County as a whole, where the median is $371,681 — a difference of about 16.6%.
Island Lake police reported 63 violent crimes per 100,000 residents, covering a population of about 7,978. Crime rates are one input among many — they vary block to block within a city, and this figure is a citywide average.
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