St. Joseph County Post Offices

1 Po Security Building
Notre Dame, Indiana 46556

66700 State Road 331
Wyatt, Indiana 46595

St. Joseph County

There are 2 US Post Offices in St. Joseph County serving a total of 7,477 residents equating to 3,739 residents per post office. It's estimated that approximately 11,934 packages are handled across the 2 county post offices annually. St. Joseph County, commonly called St. Joe County by locals, is a county located in the U.S. state of Indiana. As of Census 2010, the population was 266,931, making it the fifth-most populous county in Indiana. Formed in 1830, it was named for the St. Joseph River which flows through it toward Lake Michigan. The county seat is South Bend. St. Joseph County is part of the South Bend\u2013Mishawaka, IN-MI, Metropolitan Statistical Area."