Gary is located in Lake county Indiana with a geographic area of 49.7 square miles. The total population in Gary is 75,486 with 46.2% male and 53.8% female. Children under age 5 represent 7.0% of the population, under age 18 equal 25.7% of the population and over age 65 is 19.3% of the population. The median household income is $31,315, per capita income is $19,100. There are a total of 31,207 housing units with 50.3% owner occupied. Education includes 38.0% of residents that are high school graduates and 13.8% with a bachelor's degree or higher. The average temperature in Gary in the summer is 71 degrees, and in the winter 29 degrees.