Third Lake

County:: Lake County
County Seat:: No
Area (mi²):: 0.588
State:: Illinois

Third Lake is a village located in Lake County, Illinois. Third Lake has a 2025 population of 1,087. Third Lake is currently declining at a rate of -0.46% annually and its population has decreased by -2.25% since the most recent census, which recorded a population of 1,112 in 2020.

The average household income in Third Lake is $175,873 with a poverty rate of 2.16%. The median age in Third Lake is 50.1 years: 44.6 years for males, and 51 years for females.

Demographics

The racial composition of Third Lake includes 88.28% White, 5.82% Native American, and smaller percentages for Asian, other race, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Native American

Two or more races

Asian

Other race

Black or African American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	1,062	88.28%
Native American	70	5.82%
Two or more races	44	3.66%
Asian	15	1.25%
Other race	12	1%
Black or African American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Third Lake Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Third Lake's average per capita income is $77,381. Household income levels show a median of $150,893. The poverty rate stands at 2.16%.

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	$161,299	-
Families	$160,882	$195,956
Households	$150,893	$175,873
Non Families	$70,972	$90,358

$77,381

Average Income

$150,893

Median Household Income

2.16%

Poverty Rate