Clarksburg is a town in Carroll County, Tennessee, United States. The population was 393 at the 2010 census. Clarksburg has its own high school. Clarksburg is in southern Carroll County, along Tennessee State Route 22, which leads north 9 miles to Huntingdon, the county seat, and south 6 miles to Interstate 40 at Parkers Crossroads. According to th…Clarksburg is a town in Carroll County, Tennessee, United States. The population was 393 at the 2010 census. Clarksburg has its own high school. Clarksburg is in southern Carroll County, along Tennessee State Route 22, which leads north 9 miles to Huntingdon, the county seat, and south 6 miles to Interstate 40 at Parkers Crossroads. According to the United States Census Bureau, the town has a total area of 2.0 square miles, all land.