Sidney is a populated community in the U.S. state of Alabama. It lies within Marshall County bordered by neighboring counties Blount, Cullman, DeKalb, and Etowah is 8 miles east of Albertville. Sidney is 617 feet above sea level at latitude 34.279 and longitude -86.366. Sidney is visible on Guntersville U.S. Geological Survey Map. Area codes are 256 and 938.