Leanne Christeson (Postmaster)
leanne.k.christeson@usps.gov
211 N Delaware Ave Ste 100
Mason City, IA 50401
Mason City, IA 50401
The Mason City Post Office is located in the state of Iowa within Cerro Gordo County. This location serves 29,837 Mason City residents with a median income of $42,167. It's estimated that approximately 47,623 packages pass through this post office each year.