Northfield township

County:: Cook County
County Seat:: No
Area (mi²):: 34.285
State:: Illinois

Northfield township is located in Cook County, Illinois. Northfield township has a 2025 population of 87,245. Northfield township is currently declining at a rate of -0.51% annually and its population has decreased by -4.4% since the most recent census, which recorded a population of 91,256 in 2020.

The average household income in Northfield township is $202,501 with a poverty rate of 6.93%. The median age in Northfield township is 46.9 years: 45.6 years for males, and 48.5 years for females.

Demographics

The racial composition of Northfield township includes 71.17% White, 18.12% Asian, and smaller percentages for Black or African American, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Asian

Two or more races

Black or African American

Other race

Native American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	63,892	71.17%
Asian	16,263	18.12%
Two or more races	5,391	6%
Black or African American	2,043	2.28%
Other race	2,032	2.26%
Native American	142	0.16%
Native Hawaiian or Pacific Islander	13	0.01%

Northfield township Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Northfield township's average per capita income is $82,327. Household income levels show a median of $135,041. The poverty rate stands at 6.93%.

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	$205,125	-
Families	$185,052	$245,621
Households	$135,041	$202,501
Non Families	$57,712	$88,964

$82,327

Average Income

$135,041

Median Household Income

6.93%

Poverty Rate