There are 9 US Post Offices in Norman County serving a total of 6,630 residents equating to 737 residents per post office. It's estimated that approximately 10,582 packages are handled across the 9 county post offices annually. Norman County is a county located in the U.S. state of Minnesota. As of the 2010 census, the population was 6,852. Its county seat is Ada. The county is located in the Red River Valley region of Minnesota."