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 2026 population of 831. Mendon is currently declining at a rate of -0.72% annually and its population has decreased by -4.37% since the most recent census, which recorded a population of 869 in 2020.

The median household income in Mendon is $65,781 with a poverty rate of 15.73%. The median age in Mendon is 37.6 years: 38.8 years for males, and 37.5 years for females. For every 100 females there are 87.6 males.

831
Total Population
970
Density (mi²)
-6 -0.72%
Growth

Mendon Population

Mendon Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026831-6-0.72%
2025837-7-0.83%
2024844-7-0.82%
2023851-2-0.23%
2022853-8-0.93%
2021861-8-0.92%
2020869-2-0.23%
201995520.21%
2018953-8-0.83%
2017961-4-0.41%
201696520.21%
2015963-4-0.41%
201496740.42%
2013963-4-0.41%
201296700%
2011967141.47%
201097000%

Median Age

Overall: 37.6 years
Female: 37.5 years
Male: 38.8 years

Mendon Adults

There are 824 adults, (168 of whom are seniors) in Mendon.

Sex Ratio

Female: 622 (53.3%)
Male: 545 (46.7%)

Demographics

The racial composition of Mendon includes 96.14% White, and smaller percentages for Two or more races, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,12296.14%
Two or more races332.83%
Other race121.03%
Race
Population ↓
Percentage (of total)
Other race121.03%
Race
Population ↓
Percentage (of total)
White1,12296.14%
Two or more races332.83%

Mendon Marital Status

Economics and Income Statistics

Mendon 's average per capita income is $47,008. Household income levels show a median of $65,781. The poverty rate stands at 15.73%.

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$96,528-
Families$76,477$88,495
Households$65,781$76,299
Non Families$31,146$36,197

$47,008

Average Income

$65,781

Median Household Income

15.73%

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)