Zip Code 98277
Oak Harbor, Washington — Island County
📍 ZIP code 98277 is in Oak Harbor, Island County, Washington.
ZIP code 98277 is located in Oak Harbor, Island County, Washington. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 40,338. The area code for ZIP code 98277 is 253.
Quick Answer
Zip code 98277 is in Oak Harbor, Washington (Island County). It has a population of 40,338, median household income of $79,326, and median home value of $455,300.
Population
40,338
Income
$79,326
Home Value
$455,300
Climate
69°F / 38°F
About Zip Code 98277
Zip code 98277 is located in Oak Harbor, Washington, within Island County. Home to approximately 40,338 residents, this area sits at an elevation of 84 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 253.
The median household income is $79,326 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $455,300, and the cost of living index is 128 (28% above the national average of 100).
Summers average a high of 69°F while winters drop to 38°F. The area receives about 20 in of rain and 5 in of snow annually. The zip code covers 56.5 square miles of land area and 14.6 square miles of water.
Key Statistics
40,338
$79,326
$455,300
Pacific (PST/PDT)
253
84 ft
56.5 sq mi
35.5
17,694
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Compare With Nearby Zip Codes
| Metric | 98277 | 98257 | 98239 | 98273 | 98238 | 98221 |
|---|---|---|---|---|---|---|
| City | Oak Harbor, WA | La Conner, WA | Coupeville, WA | Mount Vernon, WA | Conway, WA | Anacortes, WA |
| Population | 40,338 | 4,448 | 7,492 | 30,078 | 44 | 23,211 |
| Median Income | $79,326 | $90,983 | $86,138 | $74,247 | $0 | $92,925 |
| Home Value | $455,300 | $481,300 | $577,700 | $448,300 | $0 | $659,800 |
| Cost of Living | 128 | 142 | 154 | 123 | 100 | 178 |
| Median Age | 35.5 | 60.2 | 60.6 | 37.3 | -666666666 | 50.7 |
Cost of Living
100 = National Average. Oak Harbor's cost of living is 28% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
5.7x
Demographics
Zip code 98277 has a population of 40,338 people with a median age of 35.5. There are 17,694 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Oak Harbor (98277) population trend from 2010 to 2024
↓ -50.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
69°F
38°F
20 in
5 in
Oak Harbor experiences mild summers with average highs around 69°F. Winters are mild with lows averaging 38°F. The area receives about 5 in of snow per year.
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Housing & Economy
Median Home Value
$455,300
Median Household Income
$79,326
With 17,694 housing units across 56.5 square miles, 98277 has a housing density of 313 units per square mile. The home price-to-income ratio is 5.7x.
Location & Geography
Latitude
48.3169°
Longitude
-122.6227°
Land Area
56.5 sq mi
Water Area
14.6 sq mi
Nearby Zip Codes
Zip codes closest to 98277 (Oak Harbor, WA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 98277's $79,326. A way to compare Oak Harbor to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 98277 (Oak Harbor, WA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Oak Harbor, Washington?
Oak Harbor, Washington uses zip code 98277.
What county is zip code 98277 in?
Zip code 98277 is located in Island County, Washington.
What is the population of zip code 98277?
The population of zip code 98277 is 40,338 with a median age of 35.5.
Is 98277 in Oak Harbor, Washington?
Yes, zip code 98277 is in Oak Harbor, Island County, Washington. The area code is 253.
Frequently Asked Questions
What city is zip code 98277 in?
Zip code 98277 is in Oak Harbor, Washington. It is part of Island County and uses the Pacific (PST/PDT) timezone.
What is zip code 98277?
Zip code 98277 is a U.S. postal code in Oak Harbor, Washington (Island County). It has a population of 40,338 and covers 56.5 square miles.
What is the population of zip code 98277?
The population of zip code 98277 (Oak Harbor, WA) is 40,338 with a median age of 35.5. There are approximately 17,694 housing units in this area.
What is the median income in zip code 98277?
The median household income in zip code 98277 (Oak Harbor, WA) is $79,326 per year. The cost of living index is 128 (100 = national average).
What is the average home price in zip code 98277?
The median home value in zip code 98277 (Oak Harbor, WA) is $455,300. The cost of living index is 128 compared to the national average of 100.
What county is zip code 98277 in?
Zip code 98277 is located in Island County, Washington. The primary city is Oak Harbor.
What is the area code for zip code 98277?
Zip code 98277 in Oak Harbor, WA uses area code 253. It is located in the Pacific (PST/PDT) timezone.
Is zip code 98277 a good place to live?
Zip code 98277 (Oak Harbor, WA) has a cost of living index of 128 (100 = national average), a median household income of $79,326, and median home values of $455,300. The median age is 35.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 98277?
The cost of living index for zip code 98277 (Oak Harbor, WA) is 128, where 100 represents the national average. This area is above the national average. Median home value: $455,300.
What schools serve zip code 98277?
Zip code 98277 in Oak Harbor, Washington is served by the local school district of Island County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.