Janet L Mahlfeldt (Postmaster)
janet.l.mahlfeldt@usps.gov
106 E Jefferson St
Gardner, IL 60424
Gardner, IL 60424
The Gardner Post Office is located in the state of Illinois within Grundy County. This location serves 2,440 Gardner residents with a median income of $57,857. It's estimated that approximately 3,895 packages pass through this post office each year.