King County Demographics

A map of King County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,210,898	1,230,588	52.9%	54.2%
Asian	469,780	449,729	20.5%	19.8%
Hispanic	251,983	243,021	11.0%	10.7%
Multiracial	167,046	153,759	7.3%	6.8%
Black	147,480	147,831	6.4%	6.5%
Native American/Other	39,984	44,747	1.7%	2.0%

King County, Washington has an estimated population of 2,287,171, a less than 1% change from the 2,269,675 recorded in the 2020 Census. The population is 52.9% White, 20.5% Asian, 11.0% Hispanic, 7.3% Multiracial, 6.4% Black, and 1.7% Native American/Other. This demographic dot map shows the population of King County, with one dot drawn for each person counted by the Census, color-coded by race.

King has become slightly more racially diverse since the 2020 Census. It is considerably 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 King County, that probability was 64.6% in 2020 and 65.6% in the most recent ACS estimates.

King County is ranked the most populous county in Washington, out of 39 counties. King County was ranked the 1st most populous county in the 2020 Census.

King County's White Population

1,210,898 residents of King County, or 52.9% of the population, identify as White. The share of White residents in King County is considerably lower than in Washington overall, where 63.1% of the population is White. King County ranks 35th statewide in terms of White residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's White population has declined by an estimated 1.6%. White residents' share of King County's population has decreased from 54.2% to 52.9%.

King County is less White than neighboring Pierce County (61.4% White), Snohomish County (62% White), Kitsap County (72.6% White), Skagit County (70.9% White), and Island County (75.4% White).

King County's Black Population

147,480 residents of King County, or 6.4% of the population, identify as Black. The share of Black residents in King County is slightly higher than in Washington overall, where 3.8% of the population is Black. King County ranks 2nd statewide in terms of Black residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's Black population has remained roughly the same. Black residents' share of King County's population has remained roughly unchanged at 6.4%.

King County is more Black than neighboring Snohomish County (3.6% Black), Kitsap County (2.2% Black), Skagit County (0.7% Black), and Island County (2.2% Black). King County is less Black than neighboring Pierce County (7% Black).

King County's Asian Population

469,780 residents of King County, or 20.5% of the population, identify as Asian. The share of Asian residents in King County is considerably higher than in Washington overall, where 9.7% of the population is Asian. King County ranks 1st statewide in terms of Asian residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's Asian population has grown by an estimated 4.5%. Asian residents' share of King County's population has increased from 19.8% to 20.5%.

King County is more Asian than neighboring Pierce County (6.8% Asian), Snohomish County (13.6% Asian), Kitsap County (4.8% Asian), Skagit County (2.1% Asian), and Island County (4.9% Asian).

King County's Hispanic Population

251,983 residents of King County, or 11.0% of the population, identify as Hispanic. The share of Hispanic residents in King County is slightly lower than in Washington overall, where 14.4% of the population is Hispanic. King County ranks 17th statewide in terms of Hispanic residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's Hispanic population has grown by an estimated 3.7%. Hispanic residents' share of King County's population has remained roughly unchanged at 11.0%.

King County is more Hispanic than neighboring Kitsap County (9.4% Hispanic), and Island County (8.7% Hispanic). King County is less Hispanic than neighboring Pierce County (12.8% Hispanic), Snohomish County (12.1% Hispanic), and Skagit County (19.3% Hispanic).

King County's Native American/Other Population

39,984 residents of King County, or 1.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in King County is comparable to the share in Washington overall, where 2.1% of the population is Native American/Other. King County ranks 23rd statewide in terms of Native American/Other residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's Native American/Other population has declined by an estimated 10.6%. Native American/Other residents' share of King County's population has remained roughly unchanged at 1.7%.

King County is more Native American/Other than neighboring Island County (1.3% Native American/Other). King County is less Native American/Other than neighboring Pierce County (2.8% Native American/Other), Snohomish County (1.8% Native American/Other), Kitsap County (2.4% Native American/Other), and Skagit County (1.8% Native American/Other).

King County's Multiracial Population

167,046 residents of King County, or 7.3% of the population, identify as Multiracial. The share of Multiracial residents in King County is comparable to the share in Washington overall, where 6.8% of the population is Multiracial. King County ranks 8th statewide in terms of Multiracial residents as a share of the population, out of 39 counties.

Since the 2020 Census, King County's Multiracial population has grown by an estimated 8.6%. Multiracial residents' share of King County's population has increased from 6.8% to 7.3%.

King County is more Multiracial than neighboring Snohomish County (6.9% Multiracial), and Skagit County (5.2% Multiracial). King County is less Multiracial than neighboring Pierce County (9.2% Multiracial), Kitsap County (8.6% Multiracial), and Island County (7.5% 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.