Roberta D Belcher (Postmaster)
roberta.d.belcher@usps.gov
103 E Market St
Diamond, MO 64840
Diamond, MO 64840
The Diamond Post Office is located in the state of Missouri within Newton County. This location serves 2,813 Diamond residents with a median income of $43,363. It's estimated that approximately 4,490 packages pass through this post office each year.