Algonquin

County:: McHenry County
County Seat:: No
Area (mi²):: 12.539
State:: Illinois

Algonquin is a village located in McHenry County, Illinois. Algonquin has a 2025 population of 30,439. Algonquin is currently growing at a rate of 0.51% annually and its population has increased by 2.57% since the most recent census, which recorded a population of 29,676 in 2020.

The average household income in Algonquin is $146,691 with a poverty rate of 4.51%. The median age in Algonquin is 41.3 years: 40.7 years for males, and 41.8 years for females.

Demographics

The racial composition of Algonquin includes 79.44% White, 5.59% Asian, 3.96% other race, and smaller percentages for Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	23,756	79.44%
Two or more races	2,357	7.88%
Asian	1,671	5.59%
Other race	1,184	3.96%
Black or African American	666	2.23%
Native American	270	0.9%
Native Hawaiian or Pacific Islander	0	0%

Algonquin Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Algonquin's average per capita income is $71,438. Household income levels show a median of $131,753. The poverty rate stands at 4.51%.

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	$154,455	-
Families	$147,158	$159,669
Households	$131,753	$146,691
Non Families	$71,348	$89,326

$71,438

Average Income

$131,753

Median Household Income

4.51%

Poverty Rate