Clifton Forge is a town in Alleghany County, Virginia, United States which is part of the greater Roanoke Region. The population was 3,555 at the 2020 census. The Jackson River flows through the town, which as a result was once known as Jackson's River Station. Clifton Forge was an independent city during the 2000 census. However, in 2001, Clifton Forge gave up its city status and reverted to a town. In previous decades, the railroad was a major employer.