Cerro Gordo County
There are 8 US Post Offices in Cerro Gordo County serving a total of 43,714 residents equating to 5,464 residents per post office. It's estimated that approximately 69,772 packages are handled across the 8 county post offices annually. Cerro Gordo County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 44,151. Its county seat is Mason City. The county is named for the Battle of Cerro Gordo, which took place during the Mexican-American War. Cerro Gordo County is part of the Mason City, IA Micropolitan Statistical Area."