Brett R Shallenbarger (Postmaster)
brett.r.shallenbarger@usps.gov
223 E Grant Hwy
Marengo, IL 60152
Marengo, IL 60152
The Marengo Post Office is located in the state of Illinois within McHenry County. This location serves 12,533 Marengo residents with a median income of $67,845. It's estimated that approximately 20,004 packages pass through this post office each year.