Princeton is located in Gibson county Indiana with a geographic area of 5.1 square miles. The total population in Princeton is 8,716 with 50.5% male and 49.5% female. Children under age 5 represent 5.5% of the population, under age 18 equal 22.8% of the population and over age 65 is 17.7% of the population. The median household income is $46,412, per capita income is $25,097. There are a total of 3,664 housing units with 56.5% owner occupied. Education includes 47.3% of residents that are high school graduates and 14.4% with a bachelor's degree or higher. The average temperature in Princeton in the summer is 76 degrees, and in the winter 29 degrees.