Snohomish County, Washington

County seat: Everett · Population 870,656 (2025) · 2,087 sq mi

Snohomish County is the 3rd most populous of Washington's 39 counties, with 870,656 people (2025 estimate). Its county seat is Everett. The map shows its 20 cities and towns and the 5 neighboring counties.

Map of Snohomish County, Washington with cities, towns and the county boundary
Snohomish County, Washington with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
Download PDF (Letter) 204 KBPNG image 132 KBWashington county map

Snohomish County facts

County seat
Everett
Population (2025 estimate)
870,656 +5.2% since 2020
Land area
2,087 sq mi 13th largest of 39
Water area
109 sq mi
Population density
417 per sq mi
Established
1861
Named after
Snohomish tribe Lushootseed Native American tribe
Largest city
Everett 113,567
Median household income
$111,246
Cities and towns
20 plus 47 CDPs
ZIP codes
30
Time zone
Pacific
FIPS code
53061

Cities and towns in Snohomish County

Snohomish County has 20 incorporated cities, towns and villages. Populations count the people living inside Snohomish County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Everett (county seat)City113,567
MarysvilleCity77,686
EdmondsCity42,748
LynnwoodCity42,132
Lake StevensCity42,091
Mountlake TerraceCity25,430
ArlingtonCity22,031
MukilteoCity21,239
Mill CreekCity20,902
BothellCity20,328King County
MonroeCity20,025
SnohomishCity10,719
StanwoodCity9,421
SultanCity7,230
BrierCity6,597
Granite FallsCity4,686
Gold BarCity2,561
DarringtonTown1,500
WoodwayCity1,316
IndexTown165

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Mill Creek East25,453
Eastmont23,721
North Lynnwood23,339
Martha Lake22,634
Silver Firs22,306
Bothell West22,029
Lake Stickney15,890
Bothell East14,578
Maltby10,910
Alderwood Manor10,266
Picnic Point10,261
Woods Creek6,943
Lake Goodwin5,536
Chain Lake4,950
Larch Way4,424
Esperance4,189
Three Lakes4,055
Canyon Creek3,910
Bunk Foss3,627
Warm Beach3,442
Lake Cassidy3,292
Clearview3,254
High Bridge3,196
Lochsloy3,029
Sisco Heights3,015
Meadowdale3,009
Arlington Heights2,727
Bryant2,648
Fobes Hill2,569
Cathcart2,064
Kayak Point1,883
Cavalero1,591
Monroe North1,456
Sunday Lake1,375
Machias1,276
Lake Ketchum1,235
Lake Bosworth907
Lake Roesiger815
May Creek791
Swede Heaven746
Startup555
North Sultan355
Oso245
Verlot224
Northwest Stanwood72
Hat Island0
Silvana0

ZIP codes in Snohomish County

30 ZIP codes reach into Snohomish County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Snohomish County, 2020–2025

Snohomish County grew by 42,709 people (+5.2%) between April 2020 and July 2025: 18,192 more births than deaths and a net gain of 24,412 people from migration.

Year (July 1)Population
2020829,901
2021836,262
2022840,860
2023848,363
2024861,070
2025870,656

Neighboring counties

Printable Snohomish County map

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Sources

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