Kingsport is a city in Sullivan and Hawkins counties in the U.S. state of Tennessee. It lies along the Holston River and had a population of 55,442 at the 2020 census. It is the largest city in the Kingsport–Bristol metropolitan area, which had 307,613 residents in 2020. The metro area is a component of the larger Tri-Cities region of Tennessee and Virginia, with a population of 508,260 in 2020. Kingsport was chartered in 1822. The city's name is a simplification of King's Port, originally referring to the area on the Holston River known as King's Boat Yard, the head of navigation for the Tennessee Valley. Kingsport is commonly included in what is known as the "Mountain Empire" in southwest Virginia and northeastern Tennessee.