Summit township

County:: Effingham County
County Seat:: No
Area (mi²):: 33.644
State:: Illinois

Summit township is located in Effingham County, Illinois. Summit township has a 2025 population of 3,700. Summit township is currently declining at a rate of -0.22% annually and its population has decreased by -2.27% since the most recent census, which recorded a population of 3,786 in 2020.

The average household income in Summit township is $146,253 with a poverty rate of 3.87%. The median age in Summit township is 44 years: 47.1 years for males, and 39.9 years for females.

Demographics

The racial composition of Summit township includes 98.29% White, and smaller percentages for Two or more races, other race, Black or African American, Native American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	3,683	98.29%
Two or more races	54	1.44%
Other race	10	0.27%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Summit township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Summit township's average per capita income is $59,442. Household income levels show a median of $106,154. The poverty rate stands at 3.87%.

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	$135,859	-
Families	$126,442	$161,126
Households	$106,154	$146,253
Non Families	$70,417	$89,544

$59,442

Average Income

$106,154

Median Household Income

3.87%

Poverty Rate