Greenville is located in Butler county Alabama with a geographic area of 21.4 square miles. The total population in Greenville is 7,478 with 45.6% male and 54.4% female. Children under age 5 represent 9.1% of the population, under age 18 equal 26.7% of the population and over age 65 is 18.8% of the population. The median household income is $41,012, per capita income is $21,228. There are a total of 2,310 housing units with 58.9% owner occupied. Education includes 41.9% of residents that are high school graduates and 19.3% with a bachelor's degree or higher. The average temperature in Greenville in the summer is 80 degrees, and in the winter 43 degrees.