There are 2 US Post Offices in Menominee County serving a total of 4,133 residents equating to 2,067 residents per post office. It's estimated that approximately 6,597 packages are handled across the 2 county post offices annually. Menominee County is a county in the U.S. state of Wisconsin. As of the 2010 census, the population was 4,232 making it the least populous county in Wisconsin. Its county seat is Keshena. Menominee is Wisconsin's newest county, having been created in 1959 after the Menominee Tribe was terminated by federal law. In 1974, the tribe regained federal recognition and restoration of most of its reservation. Today Menominee County is essentially coterminous with the boundaries of the federally recognized Menominee Indian Reservation. Memoninee County is included in the Shawano, WI Micropolitan Statistical Area, which is also included in the Green Bay-Shawano, WI Combined Statistical Area."