According to the U.S. Census Bureau, the town of Douglas has a total area of , of which , or 0.24%, are water. Douglas sits at above sea level atop the southwest end of Sand Mountain, within the watershed of the Locust Fork of the Black Warrior River, which passes to the southwest of the town.
According to the U.S. Census Bureau, the town of Douglas has a total area of , of which , or 0.24%, are water Douglas sits at above sea level .atop the southwest end of Sand Mountain, within the watershed of the Locu.st Fork of the Black Warrior River which passes to the southwe,st of the town