There are 9 US Post Offices in Juneau County serving a total of 27,361 residents equating to 3,040 residents per post office. It's estimated that approximately 43,671 packages are handled across the 9 county post offices annually. Juneau County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 26,664. Its county seat is Mauston."