Blue Earth County
There are 11 US Post Offices in Blue Earth County serving a total of 63,756 residents equating to 5,796 residents per post office. It's estimated that approximately 101,762 packages are handled across the 11 county post offices annually. Blue Earth County is a county located in the State of Minnesota. As of the 2010 census, the population was 64,013. Its county seat is Mankato. The county is named for the Blue Earth River and for the deposits of blue-green clay once evident along the banks of the Blue Earth River. Blue Earth County is part of the Mankato\u2013North Mankato, MN Metropolitan Statistical Area."