Kilbourne Flag

Kilbourne

County:
Mason County
County Seat:
No
Area (mi²):
40.092
State:
Illinois

Kilbourne is located in Mason County, Illinois. Kilbourne has a 2025 population of 454 . Kilbourne is currently declining at a rate of -0.66% annually and its population has decreased by -3.61% since the most recent census, which recorded a population of 471 in 2020.

The median household income in Kilbourne is $50,781 with a poverty rate of 16.91%. The median age in Kilbourne is 34.7 years: 43.1 years for males, and 30.5 years for females. For every 100 females there are 89.1 males.

454
Total Population
11
Density (mi²)
-3 -0.66%
Growth

Kilbourne Population

Kilbourne Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Kilbourne includes 99.51% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

White (99.51%)

Two or more races (0.49%)

Race
Population
Percentage (of total)
White60699.51%
Two or more races30.49%

Kilbourne Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Kilbourne's average per capita income is $29,868. Household income levels show a median of $50,781. The poverty rate stands at 16.91%.

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$70,391-
Families$56,250$100,251
Households$50,781$78,738
Non Families$19,766$29,115

$29,868

Average Income

$50,781

Median Household Income

16.91%

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)