The most populated Zip Code in Island County, Washington is 98277, located in Oak Harbor. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | City | Population |
|---|---|---|
| 98277 | Oak Harbor | 40,181 |
| 98282 | Camano Island | 17,642 |
| 98239 | Coupeville | 7,634 |
| 98236 | Clinton | 6,790 |
| 98260 | Langley | 5,434 |
| 98249 | Freeland | 4,372 |
| 98278 | Oak Harbor | 2,351 |
| 98253 | Greenbank | 2,106 |