Roanoke is a city in Denton County, Texas, United States and part of the Dallas–Fort Worth Metroplex. As of the 2020 census, Roanoke had a population of 9,665. Roanoke is currently growing at a rate of 3.77% annually and its population has increased by 76.74% since the 2010 census. A small part of the city extends into Tarrant County. The city was originally founded after competition with Elizabethtown, just off Highway 114. Settlers from Elizabethtown eventually moved to Roanoke permanently, and Elizabethtown is now a ghost town.