Chatham township Flag

Chatham township

County:
Sangamon County
County Seat:
No
Area (mi²):
37.237
State:
Illinois

Chatham township is located in Sangamon County, Illinois. Chatham township has a 2026 population of 8,596. Chatham township is currently growing at a rate of 0.4% annually and its population has increased by 2.19% since the most recent census, which recorded a population of 8,412 in 2020.

The median household income in Chatham township is $88,959 with a poverty rate of 4.59%. The median age in Chatham township is 35.3 years: 38.6 years for males, and 33.2 years for females. For every 100 females there are 84.2 males.

8.6K
Total Population
231
Density (mi²)
34 0.4%
Growth

Chatham township Population

Chatham township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20268,596340.4%
20258,562340.4%
20248,528340.4%
20238,494610.72%
20228,433-6-0.07%
20218,439270.32%
20208,412170.2%
20197,7181121.47%
20187,606210.28%
20177,5851051.4%
20167,480650.88%
20157,415700.95%
20147,345871.2%
20137,258630.88%
20127,195690.97%
20117,1261482.12%
20107,025270.39%

Median Age

Overall: 35.3 years
Female: 33.2 years
Male: 38.6 years

Chatham township Adults

There are 6,094 adults, (1,157 of whom are seniors) in Chatham township.

Sex Ratio

Female: 4,583 (54.3%)
Male: 3,860 (45.7%)

Demographics

The racial composition of Chatham township includes 84.91% White, 4.61% Black or African American, and smaller percentages for Asian, other race and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White7,16984.91%
Two or more races5646.68%
Black or African American3894.61%
Asian1872.21%
Other race1341.59%
Race
Population ↓
Percentage (of total)
Two or more races1661.97%
Other race1341.59%
Black or African American991.17%
White220.26%
Race
Population ↓
Percentage (of total)
White7,14784.65%
Two or more races3984.71%
Black or African American2903.43%
Asian1872.21%

Chatham township Marital Status

Economics and Income Statistics

Chatham township 's average per capita income is $62,092. Household income levels show a median of $88,959. The poverty rate stands at 4.59%.

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$124,063-
Families$113,136$128,516
Households$88,959$100,729
Non Families$61,633$64,878

$62,092

Average Income

$88,959

Median Household Income

4.59%

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)