Island County, WA ZIP codes
There are 8 ZIP codes in Island County, WA, in 7 towns, from 98236 to 98282. The largest are 98277 (Oak Harbor), 98282 (Camano Island) and 98239 (Coupeville).
The county seat is Coupeville.
- ZIP codes
- 8
- Towns
- 7
- County seat
- Coupeville
- County FIPS
53029- State
- Washington
- Population
- 86,836
- Median household income
- $90,551
- Land area
- 208 sq mi
- Area code
- 564
- Metro area
- Oak Harbor
Island County ZIP codes by town
- Coupeville (county seat)
- 98239
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Island County ZIP codes
The ZIP codes of Island County, 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.
Island County in numbers
About 86,836 people live in Island County, in 35,972 households, the 15th most populous of Washington's 39 counties. The median household income is $90,551 a year, 8% below the Washington median of $98,141 (US: $80,734). The median owner-occupied home is valued at $593,300 (5% above the Washington median), and median gross rent is $1,662 a month. The median age is 44.8; 36.6% of adults 25 and over hold a bachelor's degree or higher (39.6% across Washington); the average commute takes 26 minutes.
| Population | 86,836 |
|---|---|
| Households | 35,972 |
| Median age | 44.8 |
| Median household income | $90,551 |
| Median home value | $593,300 |
| Median gross rent | $1,662 |
| Bachelor's degree or higher | 36.6% |
| Mean commute | 26.2 min |
| Population density | 417 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Island County
| Town | ZIP codes | Population |
|---|---|---|
| Oak Harbor | 2 | 24,362 |
| Camano Island | 1 | 17,303 |
| Greenbank | 1 | 2,311 |
| Coupeville | 1 | 1,980 |
| Freeland | 1 | 1,548 |
| Clinton | 1 | 1,419 |
| Langley | 1 | 1,044 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Island County.
Not sure you are in Island County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Island County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
98236 | Clinton , WA | Standard | 7,199 | $94,362 | $668,400 |
98239 | Coupeville , WA | Standard | 7,656 | $92,125 | $593,700 |
98249 | Freeland , WA | Standard | 4,198 | $99,519 | $627,400 |
98253 | Greenbank , WA | Standard | 2,311 | $71,131 | $789,800 |
98260 | Langley , WA | Standard | 5,320 | $101,987 | $678,400 |
98277 | Oak Harbor , WA | Standard | 40,917 | $83,253 | $499,600 |
98278 | Oak Harbor , WA | Standard | 1,932 | — | — |
98282 | Camano Island , WA | Standard | 17,303 | $105,231 | $670,800 |
Cite this page
zipcodes.pro. “Island County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wa/county/island
Underlying data is public domain or openly licensed — sources, vintages and licences.