Smithville is a city in DeKalb County, Tennessee, United States. The population was 5,004 at the 2020 census, up from 3,994 at the 2010 census. It is the county seat of DeKalb County. Smithville is ho

The Caney Fork River is a river that flows through central Tennessee in the United States, draining a substantial portion of the southwestern Cumberland Plateau and southeastern Highland Rim regions.