Alton is located in Hidalgo county Texas with a geographic area of 7.3 square miles. The total population in Alton is 17,683 with 49.1% male and 50.9% female. Children under age 5 represent 8.2% of the population, under age 18 equal 36.7% of the population and over age 65 is 8.7% of the population. The median household income is $37,846, per capita income is $13,369. There are a total of 4,566 housing units with 63.9% owner occupied. Education includes 22.4% of residents that are high school graduates and 12.7% with a bachelor's degree or higher. The average temperature in Alton in the summer is 83 degrees, and in the winter 49 degrees.
