Jonesville, originally called Allen's Settlement, founded in 1811 under the name of Martinsborough, is the oldest town in Yadkin County, North Carolina, United States. The population was 2,308 at the 2020 census. The town grew by nearly 800 residents in 2001 when it merged with neighboring Arlington. Recognized as the Heart of the Yadkin Valley, Jonesville is a gateway to the Blue Ridge Mountains, the Yadkin Valley Heritage/Cultural Corridor and to local wineries in the Swan Creek AVA and the larger Yadkin Valley AVA, as well as offering access to the Yadkin River.