Kilbourne township Flag

Kilbourne township

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

Kilbourne township is located in Mason County, Illinois. Kilbourne township has a 2026 population of 448. Kilbourne township is currently declining at a rate of -0.67% annually and its population has decreased by -4.88% since the most recent census, which recorded a population of 471 in 2020.

The median household income in Kilbourne township is $52,083 with a poverty rate of 10.38%. The median age in Kilbourne township is 34.3 years: 40.6 years for males, and 22.9 years for females. For every 100 females there are 90.6 males.

448
Total Population
11
Density (mi²)
-3 -0.67%
Growth

Kilbourne township Population

Kilbourne township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026448-3-0.67%
2025451-3-0.66%
2024454-3-0.66%
2023457-3-0.65%
2022460-3-0.65%
2021463-8-1.7%
2020471-1-0.21%
2019460-5-1.08%
2018465-7-1.48%
201747230.64%
2016469-8-1.68%
2015477-8-1.65%
2014485-1-0.21%
2013486-6-1.22%
2012492-5-1.01%
2011497-7-1.39%
201050400%

Median Age

Overall: 34.3 years
Female: 22.9 years
Male: 40.6 years

Kilbourne township Adults

There are 365 adults, (54 of whom are seniors) in Kilbourne township.

Sex Ratio

Female: 288 (52.5%)
Male: 261 (47.5%)

Demographics

The racial composition of Kilbourne township includes 98.91% White, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White54398.91%
Two or more races61.09%
Race
Population ↓
Percentage (of total)
White54398.91%
Two or more races61.09%

Kilbourne township Marital Status

Economics and Income Statistics

Kilbourne township 's average per capita income is $35,833. Household income levels show a median of $52,083. The poverty rate stands at 10.38%.

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$93,750-
Families$74,297$122,982
Households$52,083$89,700
Non Families$22,083$34,222

$35,833

Average Income

$52,083

Median Household Income

10.38%

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)