 Alabama State Route 40 passes through the original center of town, leading east to Interstate 59 in Hammondville and west to Scottsboro.Alabama State Route 75 crosses AL 40 in the newer commercial part of Henagar and leads northeast to Ider and southwest to Rainsville.According to the U.S. Census Bureau, Henagar has a total area of , of which is land and , or 0.15%, is water.