Johnson City is located in Blanco County in Texas. As of the 2010 census, the town’s population numbered 1,656 citizens. Johnson City is the county seat of Blanco County. Johnson City was the hometown of the 36th President of the U.S, Lyndon Johnson. The town was founded by his great uncle James Polk Johnson. In 1879. James P. Johnson donated a 320-acre site that was located on the Pedernales River, and so the town was founded. 11 Years later, the Blanco County seat moved to Johnson City. Some of the top sights in the city are Science Mill, Texas Hills Vineyard, Lyndon B. Johnson National Historical Park, and Boyhood Home of LBJ.