Every ZIP code in Union County

978xx

The complete list of Union County, OR ZIP codes with the city each one delivers to.
ZIP code	City
97824	Cove
97827	Elgin
97841	Imbler
97850	La Grande
97867	North Powder
97876	Summerville
97883	Union

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Union County

Area codes covering Union County

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

Where Union County's ZIP codes sit

Each point is the reference point of one Union 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 Union 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.