There are 5 US Post Offices in Beadle County serving a total of 16,773 residents equating to 3,355 residents per post office. It's estimated that approximately 26,772 packages are handled across the 5 county post offices annually. Beadle County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 17,398. Its county seat is Huron. The county was created in 1879 and organized in 1880. Beadle County comprises the Huron, SD Micropolitan Statistical Area."