Grayslake, Illinois Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Grayslake, Illinois is 20,707 as of the 2023 American Community Survey, making it the 118th-largest city in Illinois. The median household income is $113,697, the median home value is $293,900, and the median age is 35.9.
The population has grown 0.9% since 2010 (21,066 → 21,262).
20,707
Population
1895
People / sq mi
$113,697
Median Income
$293,900
Median Home Value
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Grayslake covers 10.9 sq mi of land at 1895 people per square mile.
About Grayslake, IL
Educational attainment is the headline number in Grayslake: 59.1% of adults 25 and older have a four-year degree. With 20,707 residents, Grayslake is a city in Illinois.
The typical household earns $113,697 a year, above the US median of $78,538. Poverty is relatively low for US cities at 4.1%, below the national 12.4%. The typical home is valued at $293,900, with typical rent around $1,434.
Educational attainment is on the higher side for US cities — 59.1% of adults hold a four-year degree, above the national 35.0%. About 17.3% of workers primarily work from home, above the national 14.0%, and the average commute runs about 27 minutes each way.
The education numbers are the throughline: a college-heavy population in Grayslake usually coincides with higher incomes and a workforce concentrated in professional and information industries.
Grayslake village Population History (2010-2024)
The city of Grayslake village had a population of 21,066 in 2010 and 21,262 in 2024, a 0.9% growth over 14 years. The peak was 21,262 in 2024. Average annual growth rate: 0.07%.
21,262
Population (2024)
21,066
Population (2010)
21,262
Peak (2024)
0.07%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 21,066 |
| 2011 | 21,027 |
| 2012 | 21,150 |
| 2013 | 21,170 |
| 2014 | 21,144 |
| 2015 | 21,029 |
| 2016 | 20,969 |
| 2017 | 20,934 |
| 2018 | 20,862 |
| 2019 | 20,725 |
| 2020 | 21,218 |
| 2021 | 21,146 |
| 2022 | 21,061 |
| 2023 | 21,118 |
| 2024 | 21,262 |
Race & Ethnicity
| White | 75.7% |
| Black or African American | 8.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.7% |
| Two or More Races | 0.0% |
Economy & Income
$113,697
Median Household Income
$53,833
Per Capita Income
4.1%
Poverty Rate
4.2%
Unemployment Rate
Housing
$293,900
Median Home Value
$1,434
Median Rent
76.3%
Owner-Occupied
Education
97.2%
High School+
59.1%
Bachelor's+
Commute
2.2%
Drive Alone
70.2%
Public Transit
17.3%
Work From Home
27.4 min
Avg Commute
Community Profile
24.0%
Foreign Born
85.2%
Non-English at Home
6.2%
Veterans
9.2%
With Disability
96.6%
Health Insurance
97.9%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 26.8% |
| Manufacturing | 16.4% |
| Finance, Insurance & Real Estate | 11.6% |
| Education, Health Care & Social Services | 7.9% |
| Arts, Entertainment & Food Services | 5.3% |
| Information | 5.1% |
| Retail Trade | 4.0% |
| Public Administration | 3.0% |
| Construction | 2.0% |
| Transportation & Warehousing | 1.1% |
| Agriculture & Mining | 0.2% |
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Frequently Asked Questions
Grayslake, Illinois has a population of 20,707 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 118th-largest city in Illinois.
The median household income in Grayslake, Illinois is $113,697, with 4.1% of residents living below the federal poverty level.
The median home value in Grayslake, Illinois is $293,900, with median monthly rent at $1,434 and a homeownership rate of 76.3%.
The median age in Grayslake, Illinois is 35.9 years. The population is 50.9% male and 49.1% female.
The population has grown 0.9% since 2010 (21,066 → 21,262).
Where to stay in Grayslake
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.