Northfield

County:: Cook County
County Seat:: No
Area (mi²):: 3.23
State:: Illinois

Northfield is a village located in Cook County, Illinois. Northfield has a 2025 population of 5,407. Northfield is currently declining at a rate of -1.24% annually and its population has decreased by -5.9% since the most recent census, which recorded a population of 5,746 in 2020.

The average household income in Northfield is $281,510 with a poverty rate of 5.22%.The median age in Northfield is 50.5 years: 49.6 years for males, and 51.1 years for females.

Demographics

The racial composition of Northfield includes 86.03% White, 8.59% Asian, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	4,889	86.03%
Asian	488	8.59%
Two or more races	211	3.71%
Other race	82	1.44%
Black or African American	13	0.23%

Northfield Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Northfield's average per capita income is $116,445. Household income levels show a median of $180,492. The poverty rate stands at 5.22%.

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	$250,001	-
Families	$249,500	$348,478
Households	$180,492	$281,510
Non Families	$57,054	$101,213

$116,445

Average Income

$180,492

Median Household Income

5.22%

Poverty Rate