| ZIP Codes: | 35 ZIP Codes (25 Standard, 9 PO Box, 1 Unique) [See All] |
| Area Codes: | 360 / 425 / 564 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:14:17 PM |
| Population: | 841,433 [See All] |
| FIPS: | 53061 |
| CBSA: | Seattle-Tacoma-Bellevue, WA |
| Land Area: | 2,146 sq mi |
| Water Area: | 36 sq mi |
| Coordinates: | 47.9460, -122.0959 |
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841,433 residents live across 35 ZIPs covering 2,146 sq mi, served by 21 distinct USPS-recognized cities.
Population moved from 720,076 to 841,433 from 2014 to 2024 — a +16.9% change. 24 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 98021 (Bothell, $183,786 median) and poorest ZIP 98204 (Everett, $68,513) are 7.7 miles apart — a 2.7× income gap across local geography.
Median home values vary 2.6× across this county — from $395,000 in 98241 (Darrington) to $1,031,500 in 98020 (Edmonds).
Density varies 1445× across the county — from 5 people/sq mi in 98241 (Darrington) to 7,028 in 98087 (Lynnwood).
Educational attainment ranges from 18.2% bachelor's+ in 98251 (Gold Bar) to 62.7% in 98021 (Bothell) — the breadth of educational profiles across the area.
Within Washington, this is the #3 most populous of 39 counties and ranks #2 for median household income with the #2 fastest decade growth .
On the national stage, Snohomish County is the #74 most populous US county .
Hosts 1 single-entity Unique ZIP: 98207Naval Station Everett .
Weighted by population, the typical household earns about $115,712 across the county — reflecting what a typical resident sees, not a simple ZIP average.
38.2% of adults age 25+ hold a bachelor's degree or higher (226,872 of 594,167 reporting). The most-educated ZIPs cluster around Bothell.
25 Standard delivery, 9 PO Box only, 1 single-entity Unique ZIPs serve this county.
2 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Snohomish County grew 16.9% over the past decade — concentrated in 4 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 98012 | Bothell | Standard | 77,041 | $146,144 | 15.3 | 43.1% |
| 98208 | Everett | Standard | 60,915 | $103,705 | 15.6 | 13.6% |
| 98270 | Marysville | Standard | 55,049 | $108,147 | 14.9 | 16.4% |
| 98258 | Lake Stevens | Standard | 52,752 | $123,898 | 40.4 | 65.1% |
| 98223 | Arlington | Standard | 46,497 | $99,681 | 377.1 | 13.3% |
| 98204 | Everett | Standard | 45,130 | $68,513 | 7.8 | 9.2% |
| 98036 | Lynnwood | Standard | 42,370 | $88,958 | 9.6 | 13.3% |
| 98087 | Lynnwood | Standard | 41,796 | $106,693 | 5.9 | 27.3% |
| 98290 | Snohomish | Standard | 39,826 | $132,973 | 120.8 | 20.9% |
| 98026 | Edmonds | Standard | 38,976 | $133,638 | 9.4 | 7.7% |
| 98021 | Bothell | Standard | 35,631 | $183,786 | 10.3 | 24.6% |
| 98203 | Everett | Standard | 35,517 | $107,376 | 11.4 | 1.8% |
| 98201 | Everett | Standard | 31,895 | $74,554 | 21.3 | 12.4% |
| 98272 | Monroe | Standard | 31,436 | $122,352 | 102.7 | 8.2% |
| 98271 | Marysville | Standard | 30,838 | $95,654 | 45.2 | 10.9% |
| 98037 | Lynnwood | Standard | 29,723 | $107,281 | 5.8 | 7.4% |
| 98296 | Snohomish | Standard | 27,896 | $177,583 | 35.2 | -4.8% |
| 98292 | Stanwood | Standard | 27,389 | $101,765 | 77.0 | 27.6% |
| 98043 | Mountlake Terrace | Standard | 23,101 | $107,687 | 4.1 | 13.5% |
| 98275 | Mukilteo | Standard | 21,323 | $132,861 | 7.2 | 3.3% |
| 98020 | Edmonds | Standard | 19,551 | $130,319 | 5.2 | 2.3% |
| 98252 | Granite Falls | Standard | 10,361 | $98,370 | 281.2 | 13.0% |
| 98294 | Sultan | Standard | 7,963 | $96,676 | 106.4 | 19.7% |
| 98251 | Gold Bar | Standard | 4,907 | $83,891 | 189.2 | 3.6% |
| 98241 | Darrington | Standard | 2,339 | $73,185 | 480.8 | 7.6% |
| 98207 | Everett | Unique | 843 | — | 0.0 | -28.1% |
| 98256 | Index | PO Box | 368 | $94,375 | 145.3 | -27.8% |
| 98046 | Lynnwood | PO Box | — | — | 0.0 | — |
| 98082 | Mill Creek | PO Box | — | — | 0.0 | — |
| 98293 | Startup | PO Box | — | — | 0.0 | — |
| 98206 | Everett | PO Box | — | — | 0.0 | — |
| 98213 | Everett | PO Box | — | — | 0.0 | — |
| 98291 | Snohomish | PO Box | — | — | 0.0 | — |
| 98287 | Silvana | PO Box | — | — | 1.1 | — |
| 98259 | North Lakewood | PO Box | — | — | 0.0 | — |