Millbrook

County:: Kendall County
County Seat:: No
Area (mi²):: 1.846
State:: Illinois

Millbrook is a village located in Kendall County, Illinois. Millbrook has a 2025 population of 282. Millbrook is currently growing at a rate of 0.36% annually and its population has increased by 1.81% since the most recent census, which recorded a population of 277 in 2020.

The average household income in Millbrook is $121,174 with a poverty rate of 6.71%.The median age in Millbrook is 38.9 years: 38.8 years for males, and 41 years for females.

Demographics

The racial composition of Millbrook includes 99.33% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	296	99.33%
Two or more races	2	0.67%

Millbrook Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Millbrook's average per capita income is $61,406. Household income levels show a median of $128,750. The poverty rate stands at 6.71%.

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	$135,875	-
Families	$135,625	$123,950
Households	$128,750	$121,174
Non Families	$71,250	$76,668

$61,406

Average Income

$128,750

Median Household Income

6.71%

Poverty Rate