Rensselaer is located in Jasper county Indiana with a geographic area of 6.7 square miles. The total population in Rensselaer is 6,151 with 47.2% male and 52.8% female. Children under age 5 represent 7.6% of the population, under age 18 equal 27.5% of the population and over age 65 is 16.6% of the population. The median household income is $48,989, per capita income is $23,817. There are a total of 2,378 housing units with 61.5% owner occupied. Education includes 41.5% of residents that are high school graduates and 12.7% with a bachelor's degree or higher. The average temperature in Rensselaer in the summer is 72 degrees, and in the winter 29 degrees.