Somerville is located in Morgan county Alabama with a geographic area of 3.4 square miles. The total population in Somerville is 653 with 50.2% male and 49.8% female. Children under age 5 represent 1.5% of the population, under age 18 equal 11.8% of the population and over age 65 is 23.0% of the population. The median household income is $31,250, per capita income is $22,015. There are a total of 304 housing units with 68.8% owner occupied. Education includes 28.9% of residents that are high school graduates and 8.9% with a bachelor's degree or higher. The average temperature in Somerville in the summer is 77 degrees, and in the winter 43 degrees.