Sylvania is a town located in the U.S. state of Alabama. It nestled atop the Sand Mountain in north central of DeKalb County from Alabama State Route 75 moving through the town limits towards Henager on northeast and Rainsville on the southwest. Estimated total population of Sylvania in 2010 was 1,837. It has a total area of 8.6 square miles at 34°33′30″N 85°47′46″W. Sylvania is elevated by 1,388 feet above sea level. Sylvania High School is located in Sylvania and a member of the DeKalb County School System. Estimated per capita income in 2015 was $18,127. Sylvania has a positive increase of 0.60 percent on recent job growth. Sylvania Zip code is 35988. It is in Central (CST) (UTC-6).