Killen is located in Lauderdale county Alabama with a geographic area of 2.0 square miles. The total population in Killen is 1,146 with 45.6% male and 54.4% female. Children under age 5 represent 5.6% of the population, under age 18 equal 19.4% of the population and over age 65 is 21.6% of the population. The median household income is $52,005, per capita income is $24,656. There are a total of 433 housing units with 72.7% owner occupied. Education includes 41.1% of residents that are high school graduates and 19.6% with a bachelor's degree or higher. The average temperature in Killen in the summer is 77 degrees, and in the winter 43 degrees.
