Karen M Johnson (Postmaster)
karen.m.johnson@usps.gov
W2492 State Highway M69
Foster City, MI 49834
Foster City, MI 49834
The Foster City Post Office is located in the state of Michigan within Dickinson County. This location serves 284 Foster City residents with a median income of $35,625. It's estimated that approximately 453 packages pass through this post office each year.