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 and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	1,622	98.12%
Two or more races	29	1.75%
Other race	2	0.12%

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