Wonder Lake

County:: McHenry County
County Seat:: No
Area (mi²):: 4.964
State:: Illinois

Wonder Lake is a village located in McHenry County, Illinois. Wonder Lake has a 2025 population of 5,504. Wonder Lake is currently growing at a rate of 5.93% annually and its population has increased by 38.78% since the most recent census, which recorded a population of 3,966 in 2020.

The average household income in Wonder Lake is $125,495 with a poverty rate of 4.46%.The median age in Wonder Lake is 33.8 years: 33.7 years for males, and 35.3 years for females.

Demographics

The racial composition of Wonder Lake includes 77.73% White, 4.56% other race, and smaller percentages for Asian and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	3,219	77.73%
Two or more races	657	15.87%
Other race	189	4.56%
Asian	76	1.84%

Wonder Lake Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Wonder Lake's average per capita income is $70,566. Household income levels show a median of $102,829. The poverty rate stands at 4.46%.

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	$116,923	-
Families	$112,679	$117,258
Households	$102,829	$125,495
Non Families	$75,486	$154,552

$70,566

Average Income

$102,829

Median Household Income

4.46%

Poverty Rate