ZIP code 98278: Oak Harbor, WA
98278 is a ZIP code in Oak Harbor, Washington, mainly in Island County, part of the Oak Harbor, WA micro area. About 1,932 people live here.
- Population
- 1,932
- Median household income
- —
- Typical home value
- —
- Median rent
- —gross, per month
- Median age
- 22
- Homeowners
- —of occupied homes
Shaded: ZIP code 98278's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 98278 details
| City | Oak Harbor |
|---|---|
| State | Washington |
| County | Island County |
| Metro area | Oak Harbor, WA |
| Time zone | Pacific Time (UTC−8), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 4.2 sq mi, plus 1.4 sq mi of water |
| Population density | 458 people per sq mi |
| Bachelor's degree or higher | 13.8% of adults 25+ |
| Average commute | 6.2 minutes |
| Center coordinates | 48.34060, -122.67399 |
ZIP codes near 98278
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 98277 | Oak Harbor, WA | 2.5 mi | 40,917 |
| 98221 | Anacortes, WA | 8.5 mi | 23,562 |
| 98257 | La Conner, WA | 8.7 mi | 4,277 |
| 98239 | Coupeville, WA | 9.9 mi | 7,656 |
| 98282 | Camano Island, WA | 12.0 mi | 17,303 |
| 98261 | Lopez Island, WA | 13.7 mi | 2,984 |
| 98273 | Mount Vernon, WA | 14.3 mi | 30,001 |
| 98238 | Conway, WA | 15.1 mi | 46 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
About ZIP code 98278
What city is ZIP code 98278?
ZIP code 98278 is in Oak Harbor, WA, in Island County.
What county is ZIP code 98278 in?
98278 is mainly in Island County, Washington.
What is the population of ZIP code 98278?
About 1,932 people live in ZIP code 98278, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 98278 in?
98278 is in Pacific Time (UTC−8). It observes daylight saving time.
What other ZIP codes does Oak Harbor have?
Oak Harbor, WA also uses 98277.