Dickson is a city in Dickson County, Tennessee, United States. It is part of the Nashville Metropolitan Statistical Area. The population at the 2010 census was 14,538, with an estimate of 14,993 in 2014. Dickson was named for Congressman William Dickson, as was Dickson County. According to the United States Census Bureau, Dickson has a total area of 20.0 square miles (51.9 km2), of which 20.0 square miles (51.7 km2) is land and 0.1 square miles (0.2 km2), or 0.41%, is water.