• county
  • FIPS 53061
  • Largest town: Everett

Snohomish County, Washington

Snohomish County had 864,113 residents in the Census Vintage 2024 estimate, on 2,086.5 square miles of land. It ranks 3rd of 39 in Washington by population and 13th by land area.

Population
864,113
#3 of 39 in Washington · #72 in US
Area
2,086.5 sq mi
#13 of 39 in Washington · #270 in US
Density
414 / sq mi
#7 of 39 in Washington · #338 in US
Median household income
$106,067
#2 of 39 in Washington · #86 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Snohomish County within Washington. Pin: Olympia.

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Snohomish County population, land area and income

Snohomish County had 864,113 residents in the Census Vintage 2024 estimate, on 2,086.5 square miles of land. It ranks 3rd of 39 in Washington by population and 13th by land area. That works out to 414.1 people per square mile, 4.3 times the US average of 96.3, and in the top quarter nationally.

The median county-equivalent in Washington has 69,632 residents, so Snohomish County is 12.4 times that size.

Its SAIPE 2023 median household income of $106,067 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

864,113

3144th1st

72nd of 3,144 (US)

Land area

2,087 sq mi

3144th1st

270th of 3,144 (US)

Density

414.1 / sq mi

3144th1st

338th of 3,144 (US)

Median household income

$106,067

3143rd1st

86th of 3,143 (US)

Rank within Washington (39)

Population

864,113

39th1st

3rd of 39 (WA)

Land area

2,087 sq mi

39th1st

13th of 39 (WA)

Density

414.1 / sq mi

39th1st

7th of 39 (WA)

Median household income

$106,067

39th1st

2nd of 39 (WA)

How Snohomish County's population changed since 2020

Snohomish County gained 34,138 residents between the July 2020 and July 2024 estimates, a rise of 4.1%. That ranks 18th of 39 in Washington for growth. The median Washington county changed by +3.2%, and the state as a whole by +3.0%.

Since the April 2020 estimates base, Snohomish County recorded 41,371 births and 27,381 deaths, a natural change of +13,990. Net international migration added +25,103 and net domestic migration, people moving to or from other US counties, came to -2,940. The largest single component was international migration, which added 25,103 people.

830.0k2020836.2k2021841.5k2022850.3k2023864.1k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
41,371
Deaths
27,381
Net international migration
+25,103
Net domestic migration
-2,940
Change, July 2023 to July 2024
+13,816

Where Snohomish County is

The Census internal point of Snohomish County is at 48.054900, -121.765000. It sits in UTM zone 10N. The map shades Washington's 39 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Snohomish County outlined. Dots are towns of 1,000+ people with residents in it.

King County: +2.9%Thurston County: +2.3%Garfield County: +4.7%Adams County: +2.1%Kitsap County: +2.0%Mason County: +5.5%Stevens County: +5.2%Walla Walla County: -0.9%Whitman County: +1.2%Pierce County: +1.9%Benton County: +5.2%Columbia County: +1.8%Skamania County: +5.1%Douglas County: +6.4%Kittitas County: +2.9%Klickitat County: +5.7%Pacific County: +3.2%Grant County: +5.3%Grays Harbor County: +2.7%Jefferson County: +2.7%Lincoln County: +8.6%San Juan County: +4.7%Skagit County: +2.2%Island County: -0.6%Ferry County: +4.8%Chelan County: +2.4%Clark County: +4.3%Asotin County: +0.9%Franklin County: +4.2%Whatcom County: +3.3%Snohomish County: +4.1%Pend Oreille County: +6.1%Yakima County: +0.7%Clallam County: +0.8%Wahkiakum County: +7.9%Spokane County: +2.7%Okanogan County: +6.6%Cowlitz County: +2.7%Lewis County: +5.4%
Change 2020 to 2024
  1. < +1.9%
  2. < +2.7%
  3. < +4.2%
  4. < +5.3%
  5. ≥ +5.3%
no data

Orange pin: Snohomish County internal point. Dark pin: Olympia.

Internal point

Decimal
48.054900, -121.765000
DMS
48°03'17.64"N 121°45'54.00"W
UTM
10N 592026.9E 5323139.9N
Geohash
c293mhjkj
Plus code
84WW363P+X2

Towns in Snohomish County

19 incorporated places of 1,000+ people have residents in Snohomish County, 487,762 people together, or 56% of the county. Each figure counts only the part of the town inside Snohomish County; towns marked "part" extend into another county. The largest is Everett with 113,011.

  1. 01Everett113,011
  2. 02Marysville76,209
  3. 03Edmonds42,871
  4. 04Lynnwood41,597
  5. 05Lake Stevens41,350
  6. 06Mountlake Terrace25,198
  7. 07Arlington21,959
  8. 08Mukilteo21,299
  9. 09Mill Creek20,993
  10. 10Bothell (part)20,263
  11. 11Monroe19,927
  12. 12Snohomish10,534
  13. 13Stanwood8,943
  14. 14Sultan7,002
  15. 15Brier6,603
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Snohomish County

The Census 2024 county adjacency file lists 5 neighbors for Snohomish County. The most populous is King County, WA, with 2,340,211 residents. Distances run between Census internal points in a straight line.

Distance to Olympia and the nearest big city

Olympia is 88.1 miles SW of Snohomish County's internal point in a straight line. The nearest place of 100,000 or more is Everett, WA (population 113,011), 20.6 miles away. The nearest place of 10,000 or more is Lake Stevens, WA (population 41,350), 15.7 miles away.

Snohomish County FIPS code

The FIPS code of Snohomish County is 53061: state code 53 for Washington plus county code 061. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $106,067.

Questions people ask

What is the population of Snohomish County, Washington?

The Census Vintage 2024 estimate for July 1, 2024 is 864,113. That is up 34,138 people (4.1%) from the July 2020 estimate of 829,975.

What is the FIPS code of Snohomish County?

53061. The first two digits (53) are Washington; the last three (061) identify the county.

What is the largest town in Snohomish County?

Everett, with 113,011 residents inside Snohomish County in 2024.

Which counties border Snohomish County?

5 county-equivalents border it in the Census 2024 adjacency file: King County, WA; Kitsap County, WA; Skagit County, WA; Island County, WA; Chelan County, WA.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.