There are 11 US Post Offices in Surry County serving a total of 83,878 residents equating to 7,625 residents per post office. It's estimated that approximately 133,879 packages are handled across the 11 county post offices annually. Surry County is a county located in the U.S. state of North Carolina. As of the 2010 census, the population was 73,673. Its county seat is Dobson, and its largest city is Mount Airy. Surry county comprises the Mount Airy, NC Micropolitan Statistical Area, which is also included in the Greensboro-Winston-Salem-High Point, NC Combined Statistical Area."