Huntsville is located in Walker county Texas with a geographic area of 42.6 square miles. The total population in Huntsville is 41,664 with 59.1% male and 40.9% female. Children under age 5 represent 3.2% of the population, under age 18 equal 11.3% of the population and over age 65 is 10.8% of the population. The median household income is $31,020, per capita income is $14,220. There are a total of 13,187 housing units with 30.4% owner occupied. Education includes 24.2% of residents that are high school graduates and 24.6% with a bachelor's degree or higher. The average temperature in Huntsville in the summer is 82 degrees, and in the winter 49 degrees.