Flatwoods is a town in Braxton County, West Virginia, United States, located approximately one mile from exit 67 of Interstate 79. The population of Flatwoods was 264 as of the 2020 census. Although first incorporated in 1902, maps show the existence of Flatwoods as a town in 1873, and a church was established by a pastor named John Clark a…Flatwoods is a town in Braxton County, West Virginia, United States, located approximately one mile from exit 67 of Interstate 79. The population of Flatwoods was 264 as of the 2020 census. Although first incorporated in 1902, maps show the existence of Flatwoods as a town in 1873, and a church was established by a pastor named John Clark at the community there as early as 1830. The West Virginia and Pittsburgh Railroad extended a branch through Flatwoods in the late 1800s. Later, the line was taken over by Baltimore and Ohio Railroad, and Flatwoods was a halfway point on the B&O Railroad's Clarksburg-Richwood branch, approximately 62.6 miles from the Clarksburg terminal, and 59.1 miles from the Richwood terminal. The town also served as the origin of West Virginia & Pittsburgh Railroad's Sutton Branch.