Brenda Williamson (Postmaster)
brenda.s.williamson@usps.gov
109 E 3rd St
Saint Peter, IL 62880
Saint Peter, IL 62880
The Saint Peter Post Office is located in the state of Illinois within Fayette County. This location serves 717 Saint Peter residents with a median income of $39,130. It's estimated that approximately 1,144 packages pass through this post office each year.