Grayslake, IL
Population 20,707 · Illinois
About Grayslake, IL
Grayslake is a mid-sized city in Illinois with a population of 20,707 residents. The median household income is $113,697 per year, which is above the national average. The median age in Grayslake is 35.9 years.
Housing in Grayslake has a median home value of $293,900 and median monthly rent of $1,434. Of the 8,268 total housing units, the majority are owner-occupied, with 6,056 owner-occupied and 1,883 renter-occupied units.
The unemployment rate in Grayslake is 5.7% and the poverty rate is 5.6%. 59.1% of residents hold a bachelor's degree or higher. The average commute time is 27.4 minutes.
Cost of Living in Grayslake, IL
Compared to national averages, Grayslake has a median household income of $113,697 (51% above the national median of $75,149). Home values average $293,900, which is 20% above the national median. Monthly rent at $1,434 is 23% above the US average of $1,163. Within Illinois, Grayslake's income is 51% above the state average of $75,072, and home values are 77% above the state median of $165,779.
Why Live in Grayslake, IL?
Grayslake offers a strong local economy with a median household income of $113,697, well above the national average, and a well-educated community where 59.1% of residents hold a bachelor’s degree or higher, and a low poverty rate of 5.6%, better than the national average.
Grayslake has a population of 20,707 with a median age of 35.9 years. Compare Grayslake with other cities to see how it stacks up, or explore all cities in Illinois.
Similar Cities Near Grayslake
Cities in Illinois with a similar population size.
| City | Population | Median Income | Home Value | |
|---|---|---|---|---|
| East Moline | 20,837 | $63,328 | $135,300 | Compare |
| Park Forest | 20,898 | $62,305 | $106,200 | Compare |
| Libertyville | 20,493 | $162,270 | $499,300 | Compare |
| Dolton | 20,979 | $58,706 | $140,500 | Compare |
| Frankfort | 20,417 | $153,714 | $461,600 | Compare |
| South Holland | 21,016 | $87,378 | $201,200 | Compare |
| Montgomery | 21,205 | $96,985 | $270,700 | Compare |
| Geneva | 21,299 | $136,621 | $415,800 | Compare |
Demographics
Racial & Ethnic Composition
Economy & Education
Housing
Other Cities in Illinois
Data source: US Census Bureau ACS 5-Year Estimates. Last updated: 2026-04-05.
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Frequently Asked Questions about Grayslake
What is the population of Grayslake, IL?
The population of Grayslake, IL is 20,707 according to the latest Census data.
What is the median household income in Grayslake?
The median household income in Grayslake, IL is $113,697 per year.
What is the median home value in Grayslake?
The median home value in Grayslake, IL is $293,900.
What is the average rent in Grayslake?
The median monthly rent in Grayslake, IL is $1,434.
What is the unemployment rate in Grayslake?
The unemployment rate in Grayslake, IL is 5.7%.