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 and multiracial populations.

Population by Race

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%

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