Princeton is a city in and the county seat of Bureau County, Illinois, United States. The population was 7,700 at the 2014 census. Princeton is part of the Ottawa–Streator Micropolitan Statistical Area. Due to its location where Interstate 80 meets the Amtrak system, as well as its well-preserved main street and historic housing stock, Princeton has become a popular satellite town for Chicago and the Quad Cities.
Princeton is located at 41°22′43″N 89°28′1″W (41.378481, -89.466924). According to the 2010 census, Princeton has a total area of 7.48 square miles (19.37 km²), all land.
As of the census of 2000, there were 7,501 people, 3,263 households, and 1,987 families residing in the city. The population density was 1,114.6 people per square mile (430.3/km²). There were 3,513 housing units at an average density of 522.0 per square mile (201.5/km²). The racial makeup of the city was 97.81% White, 0.9939% African American, 0.11% Native American, 0.63% Asian, 0.43% from other races, and 0.64% from two or more races. Hispanic or Latino of any race were 1.24% of the population.
There were 3,263 households out of which 27.4% had children under the age of 18 living with them, 49.6% were married couples living together, 8.6% had a female householder with no husband present, and 39.1% were non-families. 35.0% of all households were made up of individuals and 17.3% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.85.
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