Colchester township

County:: McDonough County
County Seat:: No
Area (mi²):: 18.057
State:: Illinois

Colchester township is located in McDonough County, Illinois. Colchester township has a 2025 population of 1,527. Colchester township is currently declining at a rate of -0.39% annually and its population has decreased by -2.05% since the most recent census, which recorded a population of 1,559 in 2020.

The average household income in Colchester township is $70,306 with a poverty rate of 11.86%. The median age in Colchester township is 40.9 years: 39.4 years for males, and 45.3 years for females.

Demographics

The racial composition of Colchester township includes 98.12% 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	1,622	98.12%
Two or more races	29	1.75%
Other race	2	0.12%
Black or African American	0	0%
Native American	0	0%
Asian	0	0%
Native Hawaiian or Pacific Islander	0	0%

Colchester township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Colchester township's average per capita income is $40,060. Household income levels show a median of $62,482. The poverty rate stands at 11.86%.

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
Families	$69,020	$77,738
Married Families	$68,986	-
Households	$62,482	$70,306
Non Families	$22,378	$45,133

$40,060

Average Income

$62,482

Median Household Income

11.86%

Poverty Rate