| ZIP Codes: | 14 ZIP Codes (10 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Codes: | 360 / 564 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:14:16 PM |
| Population: | 133,126 [See All] |
| FIPS: | 53057 |
| CBSA: | Mount Vernon-Anacortes, WA |
| Land Area: | 1,665 sq mi |
| Water Area: | 77 sq mi |
| Coordinates: | 48.4932, -122.0903 |
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133,126 residents live across 14 ZIPs covering 1,665 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 119,598 to 133,126 from 2014 to 2024 — a +11.3% change. 12 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 98232 (Bow, $104,559 median) and poorest ZIP 98237 (Concrete, $61,711) are 32.9 miles apart — a 1.7× income gap across local geography.
Median home values vary 2.1× across this county — from $377,700 in 98237 (Concrete) to $782,200 in 98232 (Bow).
Density varies 51× across the county — from 10 people/sq mi in 98237 (Concrete) to 527 in 98233 (Burlington).
Educational attainment ranges from 12.3% bachelor's+ in 98237 (Concrete) to 47.0% in 98221 (Anacortes) — the breadth of educational profiles across the area.
Within Washington, this is the #11 most populous of 39 counties and ranks #13 for median household income with the #23 fastest decade growth .
Weighted by population, the typical household earns about $88,742 across the county — reflecting what a typical resident sees, not a simple ZIP average.
30.2% of adults age 25+ hold a bachelor's degree or higher (28,961 of 96,024 reporting).
10 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 98273 | Mount Vernon | Standard | 30,001 | $76,717 | 84.9 | 0.1% |
| 98284 | Sedro Woolley | Standard | 27,835 | $93,006 | 294.7 | 13.2% |
| 98221 | Anacortes | Standard | 23,562 | $96,528 | 54.0 | 15.1% |
| 98274 | Mount Vernon | Standard | 18,860 | $96,177 | 157.7 | 10.6% |
| 98233 | Burlington | Standard | 17,850 | $87,614 | 33.9 | 23.7% |
| 98237 | Concrete | Standard | 4,956 | $61,711 | 480.4 | 20.7% |
| 98257 | La Conner | Standard | 4,277 | $94,425 | 19.3 | 4.3% |
| 98232 | Bow | Standard | 4,054 | $104,559 | 53.6 | 13.6% |
| 98235 | Clearlake | PO Box | 531 | $63,307 | 0.3 | 1054.3% |
| 98283 | Rockport | Standard | 442 | $72,237 | 82.9 | -12.1% |
| 98267 | Marblemount | Standard | 314 | — | 401.7 | -39.1% |
| 98263 | Lyman | PO Box | 200 | $133,750 | 0.4 | 233.3% |
| 98255 | Hamilton | PO Box | 198 | $68,194 | 0.5 | 1.0% |
| 98238 | Conway | PO Box | 46 | — | 0.2 | 283.3% |