Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/WA/OAK-HARBOR

Oak Harbor ZIP codes, Washington

Oak Harbor, WA has 2 ZIP codes (98277 and 98278) and area codes 360 and 564. The largest is 98277.

USPS city name
2 ZIP codes
Population
24,362
Area codes
360, 564

Oak Harbor in numbers

About 24,362 people live in Oak Harbor, in 9,774 households. The median household income is $76,084 a year, 22% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $461,200 (18% below the Washington median), and median gross rent is $1,645 a month. The median age is 31.5; 28.9% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 18 minutes.

Population24,362Oak Harbor24,362
Households9,774Oak Harbor9,774
Median age31.5Oak Harbor31.5Washington38.3US 38.9
Median household income$76,084Oak Harbor$76,084Washington$98,141US $80,734
Median home value$461,200Oak Harbor$461,200Washington$564,600US $332,700
Median gross rent$1,645Oak Harbor$1,645Washington$1,760US $1,413
Bachelor's degree or higher28.9%Oak Harbor28.9%Washington39.6%US 35.7%
Mean commute18.4 minOak Harbor18.4 minWashington26.6 minUS 26.4 min
Population density2,521 / sq miOak Harbor2,521 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Oak Harbor city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Oak Harbor

ZIP codes with the USPS city name Oak Harbor
ZIP City Type Population Median income Median home
98277 Oak Harbor , WA Standard 40,917 $83,253 $499,600
98278 Oak Harbor , WA Standard 1,932 — —

Map of Oak Harbor ZIP codes

9827798278

The ZIP codes of Oak Harbor, WA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Oak Harbor

The nearest larger towns are Mount Vernon (35,377 people, 17 mi), Marysville (73,002 people, 26 mi) and Everett (111,845 people, 30 mi).

Towns near Oak Harbor
TownPopulationDistance
Camano 17,303 12.4 mi
Anacortes 17,966 13.5 mi
Stanwood 8,373 13.6 mi
Port Townsend 10,438 14.0 mi
Warm Beach 3,442 15.7 mi
Mount Vernon 35,377 16.8 mi
Burlington 10,003 18.2 mi
Port Hadlock-Irondale 3,884 19.5 mi
Lake Goodwin 5,536 19.6 mi
Bryant 2,648 21.0 mi
Sedro-Woolley 12,831 23.6 mi
Arlington 21,095 23.8 mi
Friday Harbor 2,728 24.4 mi
Sequim 8,161 26.1 mi

More nearby: every ZIP code in Island County · Washington ZIP codes

Cite this page

zipcodes.pro. “Oak Harbor, WA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/wa/oak-harbor

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