Umatilla County ZIP Codes

Umatilla County is a county of Oregon.

ZIP codes: 13
Cities & towns: 13
Area codes: 2
Land area: 3,215 sq mi

Every ZIP code in Umatilla County

978xx

The complete list of Umatilla County, OR ZIP codes with the city each one delivers to.
ZIP code	City
97801	Pendleton
97810	Adams
97813	Athena
97826	Echo
97835	Helix
97838	Hermiston
97859	Meacham
97862	Milton Freewater
97868	Pilot Rock
97875	Stanfield
97880	Ukiah
97882	Umatilla
97886	Weston

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Umatilla County codes above are listed without a column we would have to invent.

Cities and towns in Umatilla County

A further 2 places in Umatilla County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Umatilla County

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

Where Umatilla County's ZIP codes sit

Each point is the reference point of one Umatilla 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 Umatilla 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.