| ZIP Codes: | 8 ZIP Codes (7 Standard, 0 PO Box, 1 Unique) [See All] |
| Area Codes: | 360 / 564 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:14:16 PM |
| Population: | 86,836 [See All] |
| FIPS: | 53029 |
| CBSA: | Oak Harbor, WA |
| Land Area: | 211 sq mi |
| Water Area: | 78 sq mi |
| Coordinates: | 48.1390, -122.5505 |
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86,836 residents live across 8 ZIPs covering 211 sq mi, served by 7 distinct USPS-recognized cities.
Population moved from 78,951 to 86,836 from 2014 to 2024 — a +10.0% change. 6 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 98282 (Camano Island, $105,231 median) and poorest ZIP 98253 (Greenbank, $71,131) are 6.2 miles apart — a 1.5× income gap across local geography.
Median home values vary 1.6× across this county — from $499,600 in 98277 (Oak Harbor) to $789,800 in 98253 (Greenbank).
Density varies 4× across the county — from 199 people/sq mi in 98260 (Langley) to 717 in 98277 (Oak Harbor).
Educational attainment ranges from 27.5% bachelor's+ in 98277 (Oak Harbor) to 60.1% in 98253 (Greenbank) — the breadth of educational profiles across the area.
Within Washington, this is the #16 most populous of 39 counties and ranks #8 for median household income with the #25 fastest decade growth .
Hosts 1 single-entity Unique ZIP: 98278Whidbey Island Naval Air .
Weighted by population, the typical household earns about $91,122 across the county — reflecting what a typical resident sees, not a simple ZIP average.
36.6% of adults age 25+ hold a bachelor's degree or higher (23,672 of 64,643 reporting).
7 Standard delivery, 0 PO Box only, 1 single-entity Unique ZIPs serve this county.
1 ZIP in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 98277 | Oak Harbor | Standard | 40,917 | $83,253 | 57.1 | 8.5% |
| 98282 | Camano Island | Standard | 17,303 | $105,231 | 41.0 | 13.8% |
| 98239 | Coupeville | Standard | 7,656 | $92,125 | 31.8 | 9.1% |
| 98236 | Clinton | Standard | 7,199 | $94,362 | 23.0 | 23.3% |
| 98260 | Langley | Standard | 5,320 | $101,987 | 26.8 | -3.6% |
| 98249 | Freeland | Standard | 4,198 | $99,519 | 16.0 | -5.3% |
| 98253 | Greenbank | Standard | 2,311 | $71,131 | 11.0 | 30.1% |
| 98278 | Oak Harbor | Unique | 1,932 | — | 4.7 | 32.6% |