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Dwight Grimmer (Postmaster)
dwight.j.grimmer@usps.gov
1234 Ironwood St
Oroville, WA 98844
Oroville, WA 98844
The Oroville Post Office is located in the state of Washington within Okanogan County. This location serves 4,740 Oroville residents with a median income of $31,583. It's estimated that approximately 7,566 packages pass through this post office each year.