Old Mill Creek

County:: Lake County
County Seat:: No
Area (mi²):: 10.664
State:: Illinois

Old Mill Creek is a village located in Lake County, Illinois. Old Mill Creek has a 2025 population of 160. Old Mill Creek is currently declining at a rate of -0.62% annually and its population has decreased by -2.44% since the most recent census, which recorded a population of 164 in 2020.

The average household income in Old Mill Creek is $114,170 with a poverty rate of 6.11%.The median age in Old Mill Creek is 42.9 years: 40.8 years for males, and 45 years for females.

Demographics

The racial composition of Old Mill Creek includes 86.26% White, 10.69% other race, and smaller percentages for Two or more races, Native American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	113	86.26%
Other race	14	10.69%
Two or more races	3	2.29%
Native American	1	0.76%

Old Mill Creek Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Old Mill Creek's average per capita income is $48,333. Household income levels show a median of $71,875. The poverty rate stands at 6.11%.

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
Families	$111,667	$150,532
Married Families	$111,667	-
Households	$71,875	$114,170
Non Families	$40,000	$54,600

$48,333

Average Income

$71,875

Median Household Income

6.11%

Poverty Rate