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Sue E Ingles (Postmaster)
sue.e.ingles@usps.gov
23461 State Route 141
Waterloo, OH 45688
Waterloo, OH 45688
The Waterloo Post Office is located in the state of Ohio within Lawrence County. This location serves 475 Waterloo residents with a median income of $31,250. It's estimated that approximately 758 packages pass through this post office each year.