Grafton township

County:: Jersey County
County Seat:: No
Area (mi²):: 35.688
State:: Illinois

Grafton township is located in Jersey County, Illinois. Grafton township has a 2025 population of 57,503. Grafton township is currently growing at a rate of 0.37% annually and its population has increased by 1.88% since the most recent census, which recorded a population of 56,441 in 2020.

The average household income in Grafton township is $149,777 with a poverty rate of 3.41%. The median age in Grafton township is 40 years: 40.1 years for males, and 40 years for females.

Demographics

The racial composition of Grafton township includes 80.41% White, 6.92% Asian, 3.2% Black or African American, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Asian

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	45,613	80.41%
Two or more races	4,019	7.08%
Asian	3,925	6.92%
Black or African American	1,816	3.2%
Other race	1,226	2.16%
Native American	129	0.23%
Native Hawaiian or Pacific Islander	0	0%

Grafton township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Grafton township's average per capita income is $68,438. Household income levels show a median of $127,162. The poverty rate stands at 3.41%.

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	$162,270	-
Families	$149,586	$167,911
Households	$127,162	$149,777
Non Families	$59,860	$72,908

$68,438

Average Income

$127,162

Median Household Income

3.41%

Poverty Rate