Morristown is a city in and the county seat of Hamblen County, Tennessee, United States. Morristown also extends into Jefferson County on the western and southern ends. The city lies within the Ridge and Valley region of the Appalachians, along Cherokee Lake on the Holston River. The city's population was recorded to be 30,431 at the 2020 United States census. It is the principal city of the Morristown Metropolitan Statistical Area, which encompasses Hamblen and Jefferson counties.. The Morristown metropolitan area is also part of the Knoxville-Morristown-Sevierville Combined Statistical Area.