Every ZIP code in Washington County

740xx

The complete list of Washington County, OK ZIP codes with the city each one delivers to.
ZIP code	City
74003	Bartlesville
74004	Bartlesville
74005	Bartlesville
74006	Bartlesville
74022	Copan
74029	Dewey
74051	Ochelata
74061	Ramona
74082	Vera

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Washington County codes above are listed without a column we would have to invent.

Cities and towns in Washington County

Area codes covering Washington County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

Where Washington County's ZIP codes sit

Each point is the reference point of one Washington County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in Washington County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.