Red Willow County
There are 4 US Post Offices in Red Willow County serving a total of 10,974 residents equating to 2,744 residents per post office. It's estimated that approximately 17,516 packages are handled across the 4 county post offices annually. Red Willow County is a county located in the U.S. state of Nebraska. As of the 2010 census, the population was 11,055. Its county seat is McCook. In the Nebraska license plate system, Red Willow County is represented by the prefix 48 (it had the forty-eighth-largest number of vehicles registered in the county when the license plate system was established in 1922)."