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Angela K Bexson (Postmaster)
angela.k.bexson@usps.gov
280 3rd Ave
South Wilmington, IL 60474
South Wilmington, IL 60474
The South Wilmington Post Office is located in the state of Illinois within Grundy County. This location serves 760 South Wilmington residents with a median income of $60,357. It's estimated that approximately 1,213 packages pass through this post office each year.