where is cumberland city tn?
<answer> In Stewart County, Tennessee. <context> Cumberland City is a town in Stewart County, Tennessee. The population was 311 at the 2010 census. It is part of the Clarksville, TN — Kentucky Metropolitan Statistical Area. Cumberland City is the site of a TVA Cumberland Power Plant along the Cumberland River that provides 2.6 gigawatts of electric power to much of the area, including the cities of Clarksville in Montgomery County and Dickson in Dickson County.