Midway is an unincorporated community and former census-designated place in Washington County, Tennessee. The population was 2,491 at the 2000 census; it was not counted at the 2010 census. It is part of the Johnson City Metropolitan Statistical Area, which is a component of the Johnson City-Kingsport-Bristol, TN-VA Combined Statistical Area – c…Midway is an unincorporated community and former census-designated place in Washington County, Tennessee. The population was 2,491 at the 2000 census; it was not counted at the 2010 census. It is part of the Johnson City Metropolitan Statistical Area, which is a component of the Johnson City-Kingsport-Bristol, TN-VA Combined Statistical Area – commonly known as the "Tri-Cities" region.