Mendon Flag

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.

839
Total Population
979
Density (mi²)
-6 -0.71%
Growth

Mendon Population

Mendon Population

Data after 2023 is projected based on recent change

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)
White1,10897.97%
Other race121.06%
Two or more races110.97%

Mendon Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

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

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)