Princeton

County:: Bureau County
County Seat:: Yes
Area (mi²):: 8.24
State:: Illinois

Princeton is a city located in Bureau County, Illinois. Princeton has a 2025 population of 7,620. It is also the county seat of Bureau County. Princeton is currently declining at a rate of -0.52% annually and its population has decreased by -2.55% since the most recent census, which recorded a population of 7,819 in 2020.

The average household income in Princeton is $78,776 with a poverty rate of 15.83%.The median age in Princeton is 45.4 years: 40.9 years for males, and 49.4 years for females.

Demographics

The racial composition of Princeton includes 90.52% White, and smaller percentages for Asian, Black or African American, other race and multiracial populations.

Population by Race

Race	Population	Percentage (of total)
White	7,087	90.52%
Two or more races	489	6.25%
Asian	105	1.34%
Black or African American	74	0.95%
Other race	74	0.95%

Princeton Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Princeton's average per capita income is $41,160. Household income levels show a median of $57,682. The poverty rate stands at 15.83%.

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	$102,315	-
Families	$76,853	$98,294
Households	$57,682	$78,776
Non Families	$39,722	$55,020

$41,160

Average Income

$57,682

Median Household Income

15.83%

Poverty Rate