There are 6 US Post Offices in Buffalo County serving a total of 14,739 residents equating to 2,457 residents per post office. It's estimated that approximately 23,525 packages are handled across the 6 county post offices annually. Buffalo County is a county located in the U.S. state of Wisconsin. As of the 2010 census, the population was 13,587. Its county seat is Alma. The county was created in 1853 and organized the following year."