Foster township Flag

Foster township

County:
Madison County
County Seat:
No
Area (mi²):
30.372
State:
Illinois

Foster township is located in Madison County, Illinois. Foster township has a 2026 population of 3,857. Foster township is currently declining at a rate of -0.03% annually and its population has decreased by -0.72% since the most recent census, which recorded a population of 3,885 in 2020.

The median household income in Foster township is $110,625 with a poverty rate of 7.45%. The median age in Foster township is 53.4 years: 52.8 years for males, and 53.6 years for females. For every 100 females there are 113.8 males.

3.9K
Total Population
127
Density (mi²)
-1 -0.03%
Growth

Foster township Population

Foster township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263,857-1-0.03%
20253,858-1-0.03%
20243,859-1-0.03%
20233,860-5-0.13%
20223,865-13-0.34%
20213,878-7-0.18%
20203,885-1-0.03%
20193,921-9-0.23%
20183,930-7-0.18%
20173,93730.08%
20163,93430.08%
20153,931-4-0.1%
20143,935-8-0.2%
20133,943-14-0.35%
20123,957-13-0.33%
20113,970-121-2.96%
20103,98000%

Median Age

Overall: 53.4 years
Female: 53.6 years
Male: 52.8 years

Foster township Adults

There are 3,126 adults, (951 of whom are seniors) in Foster township.

Sex Ratio

Female: 1,809 (46.8%)
Male: 2,058 (53.2%)

Demographics

The racial composition of Foster township includes 91.62% White, and smaller percentages for Black or African American, Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3,54391.62%
Two or more races1293.34%
Black or African American1022.64%
Asian551.42%
Other race380.98%
Race
Population ↓
Percentage (of total)
Two or more races220.57%
White90.23%
Other race10.03%
Race
Population ↓
Percentage (of total)
White3,53491.39%
Two or more races1072.77%
Black or African American1022.64%
Asian551.42%
Other race370.96%

Foster township Marital Status

Economics and Income Statistics

Foster township 's average per capita income is $62,869. Household income levels show a median of $110,625. The poverty rate stands at 7.45%.

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$129,500-
Families$118,281$125,232
Households$110,625$114,264
Non Families$61,299$70,933

$62,869

Average Income

$110,625

Median Household Income

7.45%

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)