Decherd is a city in Franklin County, Tennessee, United States. The population was 2,246 at the 2000 census. It is part of the Tullahoma, Tennessee Micropolitan Statistical Area. According to the United States Census Bureau, the city has a total area of 4.7 square miles (12 km2), of which 4.7 square miles (12 km2) is land and 0.21% is water. Decherd is immediately adjacent to the neighboring town and county seat of Winchester.