There are 5 US Post Offices in Yadkin County serving a total of 39,518 residents equating to 7,904 residents per post office. It's estimated that approximately 63,075 packages are handled across the 5 county post offices annually. Yadkin County is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 38,406. Its county seat is Yadkinville. Yadkin County is included in the Winston-Salem, NC Metropolitan Statistical Area, which is also included in the Greensboro-Winston-Salem-High Point, NC Combined Statistical Area."