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 2025 population of 8,552. Chatham township is currently growing at a rate of 0.51% annually and its population has increased by 1.66% since the most recent census, which recorded a population of 8,412 in 2020.

The average household income in Chatham township is $99,132 with a poverty rate of 4.5%.The median age in Chatham township is 34 years: 36.7 years for males, and 31.6 years for females.

Demographics

The racial composition of Chatham township includes 87.97% White, 3.39% Black or African American, and smaller percentages for Asian, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	7,398	87.97%
Two or more races	427	5.08%
Black or African American	285	3.39%
Asian	167	1.99%
Other race	133	1.58%

Chatham township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Chatham township's average per capita income is $62,859. Household income levels show a median of $87,152. The poverty rate stands at 4.5%.

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	$125,227	-
Families	$115,526	$126,060
Households	$87,152	$99,132
Non Families	$59,683	$63,986

$62,859

Average Income

$87,152

Median Household Income

4.5%

Poverty Rate