Allen is located in Collin county Texas with a geographic area of 26.4 square miles. The total population in Allen is 104,040 with 51.0% male and 49.0% female. Children under age 5 represent 5.7% of the population, under age 18 equal 27.3% of the population and over age 65 is 9.0% of the population. The median household income is $113,719, per capita income is $45,071. There are a total of 33,649 housing units with 73.4% owner occupied. Education includes 9.3% of residents that are high school graduates and 62.3% with a bachelor's degree or higher. The average temperature in Allen in the summer is 81 degrees, and in the winter 49 degrees.
