Roanoke is a city in Denton County, Texas, United States and part of the Dallas–Fort Worth Metroplex. The population was 5,962 at the 2010 census. With a 2020 population of 10,537, it is the 236th largest city in Texas and the 2991st largest city in the United States. Roanoke is currently growing at a rate of 3.77% annually and its population has increased by 76.74% since the most recent census, which recorded a population of 5,962 in 2010. A small part of the city extends into Tarrant. The city was originally founded after competition with Elizabethtown, located just off Highway 114. Settlers from Elizabethtown eventually moved to Roanoke permanently, and Elizabethtown currently resides as a ghost town.

Denton County is located in the U.S. state of Texas. As of the 2020 census, its population was 906,422, making it the seventh-most populous county in Texas. The county seat is Denton. The county, which was named for John B. Denton, was established in 1846. Denton County constitutes part of the Dallas–Fort Worth metroplex. In 2007, it was one of the fastest-growing counties in the United States.