Mendon Flag

Mendon

County:
Adams County
County Seat:
No
Area (mi²):
36.689
State:
Illinois

Mendon is located in Adams County, Illinois. Mendon has a 2025 population of 1,374 . Mendon is currently declining at a rate of -0.79% annually and its population has decreased by -3.78% since the most recent census, which recorded a population of 1,428 in 2020.

The average household income in Mendon is $90,254 with a poverty rate of 8.68%. The median age in Mendon is 34 years: 34.2 years for males, and 32.7 years for females. For every 100 females there are 96.8 males.

1.4K
Total Population
37
Density (mi²)
-11 -0.79%
Growth

Mendon Population

Mendon Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mendon includes 97.36% White, and smaller percentages for Two or more races, other race and multiracial populations.

Population by Race

White (97.36%)

Two or more races (1.74%)

Other race (0.9%)

Race
Population
Percentage (of total)
White1,73497.36%
Two or more races311.74%
Other race160.9%

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 $55,199. Household income levels show a median of $73,491. The poverty rate stands at 8.68%.

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$98,438-
Families$93,194$108,172
Households$73,491$90,254
Non Families$59,500$55,571

$55,199

Average Income

$73,491

Median Household Income

8.68%

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)