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

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

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