ZIP Code 98278: Oak Harbor, WA
County: Island
Coordinates: 48.34020, -122.66950
ZIP Type: Standard
Time Zone: Pacific Time (PT)
Explore detailed information for ZIP code 98278 in Oak Harbor, WA. We include verified county details for Island plus key geographic references used for mapping and logistics.
| Primary City | Oak Harbor |
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| ZIP Code | 98278 |
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| County | Island |
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| State | WA |
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| Latitude / Longitude | 48.34020, -122.66950 |
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| ZIP Type | Standard |
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| Time Zone | Pacific Time (PT) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 98278 (not an exact boundary).
Geographic & Administrative Context
Coordinates for 98278 are listed as 48.34020 / -122.66950, useful for GPS and service checks in and around Oak Harbor, WA.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 98278 for mail delivery and general location reference in
Island,
WA.
Some addresses near Oak Harbor may share this ZIP due to delivery routing and local service areas.
Related ZIP Codes (Nearby)
Explore other postal codes near Oak Harbor within WA.
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Frequently Asked Questions
What is the primary city for ZIP code 98278?
The primary city for this ZIP code is Oak Harbor, located in WA.
In which county is 98278 located?
ZIP code 98278 is situated within Island, WA.
What are the coordinates for 98278?
The approximate center point is 48.34020 (Latitude) and -122.66950 (Longitude).
Is ZIP code 98278 active?
This page lists ZIP 98278 as Listed based on the latest refresh date shown above.
Does ZIP 98278 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08