Mendon

County:: Adams County
County Seat:: No
Area (mi²):: 0.857
State:: Illinois

Mendon is a village located in Adams County, Illinois. Mendon has a 2025 population of 839. Mendon is currently declining at a rate of -0.71% annually and its population has decreased by -3.45% since the most recent census, which recorded a population of 869 in 2020.

The average household income in Mendon is $71,522 with a poverty rate of 13.9%. The median age in Mendon is 37.2 years: 36.5 years for males, and 37.2 years for females.

Demographics

The racial composition of Mendon includes 97.97% White, and smaller percentages for other race, Two or more races, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	1,108	97.97%
Other race	12	1.06%
Two or more races	11	0.97%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Mendon Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mendon's average per capita income is $50,521. Household income levels show a median of $62,778. The poverty rate stands at 13.9%.

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	$95,000	-
Families	$87,250	$89,519
Households	$62,778	$71,522
Non Families	$24,375	$29,639

$50,521

Average Income

$62,778

Median Household Income

13.9%

Poverty Rate