Oak Harbor Washington ZIP Codes

Oak Harbor holds 2 ZIP codes, all inside one county and one postal prefix.

Every ZIP code in Oak Harbor

The complete list of Oak Harbor, Washington ZIP codes with the county each falls in.
ZIP code	County
98277	Island County
98278	Island 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Oak Harbor codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Oak Harbor. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Oak Harbor ZIP code begins 982. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 76 ZIP codes, so Oak Harbor accounts for 3% of it.

Every Washington ZIP prefix and the region it covers →

Area codes covering Oak Harbor

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 Oak Harbor occupies.

Oak Harbor Washington area codes in full →

Where Oak Harbor's ZIP codes sit

Each point is one Oak Harbor ZIP code, plotted from its record coordinates.

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

Cities near Oak Harbor

The closest places to Oak Harbor with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Coupeville Washington ZIP codes	5.7 mi	1 ZIP code
La Conner Washington ZIP codes	9.2 mi	1 ZIP code
Anacortes Washington ZIP codes	14 mi	1 ZIP code
Stanwood Washington ZIP codes	14 mi	1 ZIP code
Port Townsend Washington ZIP codes	14 mi	1 ZIP code
Mount Vernon Washington ZIP codes	17 mi	2 ZIP codes
Burlington Washington ZIP codes	18 mi	1 ZIP code
Langley Washington ZIP codes	20 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.