Snohomish County Demographics

A map of Snohomish County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	523,347	528,415	62.0%	63.8%
Asian	114,492	100,654	13.6%	12.2%
Hispanic	102,350	95,644	12.1%	11.6%
Multiracial	58,544	57,203	6.9%	6.9%
Black	30,238	28,392	3.6%	3.4%
Native American/Other	15,459	17,649	1.8%	2.1%

Snohomish County, Washington has an estimated population of 844,430, a slight increase from the 827,957 recorded in the 2020 Census. The population is 62.0% White, 13.6% Asian, 12.1% Hispanic, 6.9% Multiracial, 3.6% Black, and 1.8% Native American/Other. This demographic dot map shows the population of Snohomish County, with one dot drawn for each person counted by the Census, color-coded by race.

Snohomish has become more racially diverse since the 2020 Census. It is more diverse than Washington overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Snohomish County, that probability was 55.8% in 2020 and 57.6% in the most recent ACS estimates.

Snohomish County is ranked the 3rd most populous county in Washington, out of 39 counties. Snohomish County was ranked the 3rd most populous county in the 2020 Census.

Snohomish County's White Population

523,347 residents of Snohomish County, or 62.0% of the population, identify as White. The share of White residents in Snohomish County is comparable to the share in Washington overall, where 63.1% of the population is White. Snohomish County ranks 31st statewide in terms of White residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's White population has remained roughly the same. White residents' share of Snohomish County's population has decreased from 63.8% to 62.0%.

Snohomish County is more White than neighboring King County (52.9% White). Snohomish County is less White than neighboring Skagit County (70.9% White), Whatcom County (75.7% White), Island County (75.4% White), and Kitsap County (72.6% White).

Snohomish County's Black Population

30,238 residents of Snohomish County, or 3.6% of the population, identify as Black. The share of Black residents in Snohomish County is comparable to the share in Washington overall, where 3.8% of the population is Black. Snohomish County ranks 3rd statewide in terms of Black residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's Black population has grown by an estimated 6.5%. Black residents' share of Snohomish County's population has remained roughly unchanged at 3.6%.

Snohomish County is more Black than neighboring Skagit County (0.7% Black), Whatcom County (0.9% Black), Island County (2.2% Black), and Kitsap County (2.2% Black). Snohomish County is less Black than neighboring King County (6.4% Black).

Snohomish County's Asian Population

114,492 residents of Snohomish County, or 13.6% of the population, identify as Asian. The share of Asian residents in Snohomish County is slightly higher than in Washington overall, where 9.7% of the population is Asian. Snohomish County ranks 2nd statewide in terms of Asian residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's Asian population has grown by an estimated 13.7%. Asian residents' share of Snohomish County's population has increased from 12.2% to 13.6%.

Snohomish County is more Asian than neighboring Skagit County (2.1% Asian), Whatcom County (4.4% Asian), Island County (4.9% Asian), and Kitsap County (4.8% Asian). Snohomish County is less Asian than neighboring King County (20.5% Asian).

Snohomish County's Hispanic Population

102,350 residents of Snohomish County, or 12.1% of the population, identify as Hispanic. The share of Hispanic residents in Snohomish County is slightly lower than in Washington overall, where 14.4% of the population is Hispanic. Snohomish County ranks 15th statewide in terms of Hispanic residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's Hispanic population has grown by an estimated 7.0%. Hispanic residents' share of Snohomish County's population has increased from 11.6% to 12.1%.

Snohomish County is more Hispanic than neighboring King County (11% Hispanic), Whatcom County (10.6% Hispanic), Island County (8.7% Hispanic), and Kitsap County (9.4% Hispanic). Snohomish County is less Hispanic than neighboring Skagit County (19.3% Hispanic).

Snohomish County's Native American/Other Population

15,459 residents of Snohomish County, or 1.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Snohomish County is comparable to the share in Washington overall, where 2.1% of the population is Native American/Other. Snohomish County ranks 21st statewide in terms of Native American/Other residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's Native American/Other population has declined by an estimated 12.4%. Native American/Other residents' share of Snohomish County's population has remained roughly unchanged at 1.8%.

Snohomish County is more Native American/Other than neighboring King County (1.7% Native American/Other), and Island County (1.3% Native American/Other). Snohomish County is less Native American/Other than neighboring Whatcom County (2.2% Native American/Other), and Kitsap County (2.4% Native American/Other).

Snohomish County's Multiracial Population

58,544 residents of Snohomish County, or 6.9% of the population, identify as Multiracial. The share of Multiracial residents in Snohomish County is comparable to the share in Washington overall, where 6.8% of the population is Multiracial. Snohomish County ranks 6th statewide in terms of Multiracial residents as a share of the population, out of 39 counties.

Since the 2020 Census, Snohomish County's Multiracial population has grown by an estimated 2.3%. Multiracial residents' share of Snohomish County's population has remained roughly unchanged at 6.9%.

Snohomish County is more Multiracial than neighboring Skagit County (5.2% Multiracial), and Whatcom County (6.2% Multiracial). Snohomish County is less Multiracial than neighboring King County (7.3% Multiracial), Island County (7.5% Multiracial), and Kitsap County (8.6% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.