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, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Black or African American

Asian

Other race

Native American

Native Hawaiian or Pacific Islander

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%
Native American	0	0%
Native Hawaiian or Pacific Islander	0	0%

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