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 and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,108	97.97%
Other race	12	1.06%
Two or more races	11	0.97%

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