There are 3 US Post Offices in Dundy County serving a total of 1,787 residents equating to 596 residents per post office. It's estimated that approximately 2,852 packages are handled across the 3 county post offices annually. Dundy County is a county in the U.S. state of Nebraska. As of the 2010 census, the population was 2,008. Its county seat is Benkelman. In the Nebraska license plate system, Dundy County is represented by the prefix 76 (it had the seventy-sixth-largest number of vehicles registered in the county when the license plate system was established in 1922)."