Princeton is located in Illinois. Princeton, Illinois has a population of 7,620. Princeton is more family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 26%.
The median household income in Princeton, Illinois is $56,210. The median household income for the surrounding county is $58,569 compared to the national median of $66,222. The median age of people living in Princeton is 45 years.
The average high temperature in July is 85.1 degrees, with an average low temperature in January of 13.8 degrees. The annual precipitation is 37.87.