Grayslake

County:: Lake County
County Seat:: No
Area (mi²):: 10.914
State:: Illinois

Grayslake is a village located in Lake County, Illinois. Grayslake has a 2025 population of 20,779. Grayslake is currently declining at a rate of -0.42% annually and its population has decreased by -2.06% since the most recent census, which recorded a population of 21,216 in 2020.

The average household income in Grayslake is $139,637 with a poverty rate of 5.58%.The median age in Grayslake is 35.9 years: 34.9 years for males, and 36.8 years for females.

Demographics

The racial composition of Grayslake includes 75.71% White, 8.56% Black or African American, 3.92% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	15,678	75.71%
Two or more races	1,918	9.26%
Black or African American	1,773	8.56%
Asian	811	3.92%
Other race	413	1.99%
Native American	101	0.49%
Native Hawaiian or Pacific Islander	13	0.06%

Grayslake Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Grayslake's average per capita income is $69,633. Household income levels show a median of $113,697. The poverty rate stands at 5.58%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$153,858	-
Families	$139,280	$155,759
Households	$113,697	$139,637
Non Families	$66,406	$92,212

$69,633

Average Income

$113,697

Median Household Income

5.58%

Poverty Rate