There are 12 US Post Offices in Redwood County serving a total of 15,909 residents equating to 1,326 residents per post office. It's estimated that approximately 25,393 packages are handled across the 12 county post offices annually. Redwood County is a county located in the U.S. state of Minnesota. As of the 2010 census, the population was 16,059. Its county seat is Redwood Falls. The Lower Sioux Indian Reservation is entirely within the county."