Sylvania is located in Dekalb county Alabama with a geographic area of 8.5 square miles. The total population in Sylvania is 2,386 with 47.9% male and 52.1% female. Children under age 5 represent 10.3% of the population, under age 18 equal 27.4% of the population and over age 65 is 12.1% of the population. The median household income is $43,526, per capita income is $23,913. There are a total of 840 housing units with 70.0% owner occupied. Education includes 40.4% of residents that are high school graduates and 18.0% with a bachelor's degree or higher. The average temperature in Sylvania in the summer is 77 degrees, and in the winter 43 degrees.