There are 4 US Post Offices in Pepin County serving a total of 7,535 residents equating to 1,884 residents per post office. It's estimated that approximately 12,027 packages are handled across the 4 county post offices annually. Pepin County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 7,469, making it the fourth-least populous county in Wisconsin. Its county seat is Durand. Pepin County was the birthplace of Laura Ingalls Wilder."