Hermiston Oregon ZIP Codes
Hermiston holds a single ZIP code.
Every ZIP code in Hermiston
| ZIP code | County |
|---|---|
| 97838 | Umatilla County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Hermiston codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Hermiston. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Hermiston ZIP code begins 978. Those first three digits identify the sectional center facility that processes mail for this part of Oregon. Statewide that range covers 54 ZIP codes, so Hermiston accounts for 2% of it.
Every Oregon ZIP prefix and the region it covers →
Area codes covering Hermiston
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Hermiston occupies.
Hermiston Oregon area codes in full →
Where Hermiston's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Hermiston
| City | Distance | ZIP codes |
|---|---|---|
| Stanfield Oregon ZIP codes | 4.8 mi | 1 ZIP code |
| Umatilla Oregon ZIP codes | 6.3 mi | 1 ZIP code |
| Echo Oregon ZIP codes | 7.4 mi | 1 ZIP code |
| Irrigon Oregon ZIP codes | 11 mi | 1 ZIP code |
| Boardman Oregon ZIP codes | 20 mi | 1 ZIP code |
| Pendleton Oregon ZIP codes | 25 mi | 1 ZIP code |
| Helix Oregon ZIP codes | 30 mi | 1 ZIP code |
| Pilot Rock Oregon ZIP codes | 32 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.