Jefferson County Demographics

A map of Jefferson County's Population by Race

Jefferson County, Washington had a population of 32,977 in 2020. It was 85.6% White, 0.6% Black, 1.5% Asian, 4.0% Hispanic, 2.4% Native American/Other, and 5.9% Multiracial. This map presents the population of Jefferson County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Jefferson County is the 27th most populous county of the 39 counties in Washington.

Jefferson County's White Population

28,216 residents of Jefferson County identify as White, or 85.6%. This makes the White share of the population of Jefferson County considerably larger than the White share of the population of Washington (63.8% White). Of the 39 counties in Washington, Jefferson County is ranked #6 in terms of White residents as a share of the population.

Jefferson County is more White than neighboring Clallam County (79.3% White), Mason County (75.5% White), Grays Harbor County (75.5% White), Kitsap County (72.2% White), and San Juan County (84.5% White).

Jefferson County's Black Population

207 residents of Jefferson County identify as Black, or 0.6%. This makes the Black share of the population of Jefferson County roughly similar to the Black share of the population of Washington (3.8% Black). Of the 39 counties in Washington, Jefferson County is ranked #22 in terms of Black residents as a share of the population.

Jefferson County is more Black than neighboring San Juan County (0.3% Black). Jefferson County is less Black than neighboring Clallam County (0.7% Black), Mason County (1% Black), Grays Harbor County (1.3% Black), and Kitsap County (2.7% Black).

Jefferson County's Asian Population

487 residents of Jefferson County identify as Asian, or 1.5%. This makes the Asian share of the population of Jefferson County slightly less than the Asian share of the population of Washington (9.4% Asian). Of the 39 counties in Washington, Jefferson County is ranked #18 in terms of Asian residents as a share of the population.

Jefferson County is more Asian than neighboring Mason County (1.2% Asian), Grays Harbor County (1.4% Asian), and San Juan County (1.3% Asian). Jefferson County is less Asian than neighboring Clallam County (1.6% Asian), and Kitsap County (5.1% Asian).

Jefferson County's Hispanic Population

1,305 residents of Jefferson County identify as Hispanic, or 4.0%. This makes the Hispanic share of the population of Jefferson County slightly less than the Hispanic share of the population of Washington (13.7% Hispanic). Of the 39 counties in Washington, Jefferson County is ranked #35 in terms of Hispanic residents as a share of the population.

Jefferson County is less Hispanic than neighboring Clallam County (6.1% Hispanic), Mason County (11.6% Hispanic), Grays Harbor County (10.4% Hispanic), Kitsap County (8.8% Hispanic), and San Juan County (7.3% Hispanic).

Jefferson County's Native American/Other Population

800 residents of Jefferson County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 2.4%. This makes the Native American/Other share of the population of Jefferson County roughly similar to the Native American/Other share of the population of Washington (2.6% Native American/Other). Of the 39 counties in Washington, Jefferson County is ranked #18 in terms of Native American/Other residents as a share of the population.

Jefferson County is more Native American/Other than neighboring San Juan County (1.3% Native American/Other). Jefferson County is less Native American/Other than neighboring Clallam County (5.8% Native American/Other), Mason County (4% Native American/Other), Grays Harbor County (5.3% Native American/Other), and Kitsap County (2.9% Native American/Other).

Jefferson County's Multiracial Population

1,962 residents of Jefferson County identify as Multiracial, or 5.9%. This makes the Multiracial share of the population of Jefferson County roughly similar to the Multiracial share of the population of Washington (6.6% Multiracial). Of the 39 counties in Washington, Jefferson County is ranked #19 in terms of Multiracial residents as a share of the population.

Jefferson County is more Multiracial than neighboring San Juan County (5.4% Multiracial). Jefferson County is less Multiracial than neighboring Clallam County (6.5% Multiracial), Mason County (6.8% Multiracial), Grays Harbor County (6.2% Multiracial), and Kitsap County (8.3% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.