There are 5 US Post Offices in Wexford County serving a total of 32,320 residents equating to 6,464 residents per post office. It's estimated that approximately 51,586 packages are handled across the 5 county post offices annually. Wexford County is a county located in the U.S. state of Michigan. As of the 2010 census, the population was 32,735. The county seat is Cadillac. Wexford County is part of the Cadillac, MI Micropolitan Statistical Area, which also includes Missaukee County. It is considered to be part of Northern Michigan. The county is also known for being the location of the first known sighting of the Michigan dogman."