Tonawanda is located in Erie county New york with a geographic area of 17.3 square miles. The total population in Tonawanda is 56,829 with 48.2% male and 51.8% female. Children under age 5 represent 4.6% of the population, under age 18 equal 17.9% of the population and over age 65 is 20.6% of the population. The median household income is $62,641, per capita income is $35,516. There are a total of 26,131 housing units with 73.7% owner occupied. Education includes 22.7% of residents that are high school graduates and 39.8% with a bachelor's degree or higher. The average temperature in Tonawanda in the summer is 70 degrees, and in the winter 27 degrees.