Kittitas County Demographics

A map of Kittitas County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	37,384	35,323	79.3%	79.7%
Hispanic	4,974	4,594	10.5%	10.4%
Multiracial	2,897	2,393	6.1%	5.4%
Asian	812	907	1.7%	2.0%
Native American/Other	608	740	1.3%	1.7%
Black	497	380	1.1%	0.9%

Kittitas County, Washington has an estimated population of 47,172, an increase from the 44,337 recorded in the 2020 Census. The population is 79.3% White, 10.5% Hispanic, 6.1% Multiracial, 1.7% Asian, 1.3% Native American/Other, and 1.1% Black. This demographic dot map shows the population of Kittitas County, with one dot drawn for each person counted by the Census, color-coded by race.

Kittitas has become slightly more racially diverse since the 2020 Census. It is considerably less 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 Kittitas County, that probability was 35.1% in 2020 and 35.6% in the most recent ACS estimates.

Kittitas County is ranked the 23rd most populous county in Washington, out of 39 counties. Kittitas County was ranked the 24th most populous county in the 2020 Census.

Kittitas County's White Population

37,384 residents of Kittitas County, or 79.3% of the population, identify as White. The share of White residents in Kittitas County is significantly higher than in Washington overall, where 63.1% of the population is White. Kittitas County ranks 13th statewide in terms of White residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's White population has grown by an estimated 5.8%. White residents' share of Kittitas County's population has remained roughly unchanged at 79.3%.

Kittitas County is more White than neighboring Yakima County (39.4% White), Chelan County (65% White), Douglas County (57.9% White), King County (52.9% White), and Grant County (49.2% White).

Kittitas County's Black Population

497 residents of Kittitas County, or 1.1% of the population, identify as Black. The share of Black residents in Kittitas County is slightly lower than in Washington overall, where 3.8% of the population is Black. Kittitas County ranks 16th statewide in terms of Black residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's Black population has grown by an estimated 30.8%. Black residents' share of Kittitas County's population has remained roughly unchanged at 1.1%.

Kittitas County is more Black than neighboring Yakima County (0.6% Black), Chelan County (0.4% Black), and Douglas County (0.4% Black). Kittitas County is less Black than neighboring King County (6.4% Black), and Grant County (1.2% Black).

Kittitas County's Asian Population

812 residents of Kittitas County, or 1.7% of the population, identify as Asian. The share of Asian residents in Kittitas County is lower than in Washington overall, where 9.7% of the population is Asian. Kittitas County ranks 13th statewide in terms of Asian residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's Asian population has declined by an estimated 10.5%. Asian residents' share of Kittitas County's population has remained roughly unchanged at 1.7%.

Kittitas County is more Asian than neighboring Yakima County (1.1% Asian), Chelan County (0.8% Asian), Douglas County (0.8% Asian), and Grant County (0.8% Asian). Kittitas County is less Asian than neighboring King County (20.5% Asian).

Kittitas County's Hispanic Population

4,974 residents of Kittitas County, or 10.5% of the population, identify as Hispanic. The share of Hispanic residents in Kittitas County is slightly lower than in Washington overall, where 14.4% of the population is Hispanic. Kittitas County ranks 18th statewide in terms of Hispanic residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's Hispanic population has grown by an estimated 8.3%. Hispanic residents' share of Kittitas County's population has remained roughly unchanged at 10.5%.

Kittitas County is less Hispanic than neighboring Yakima County (52.4% Hispanic), Chelan County (29% Hispanic), Douglas County (35.5% Hispanic), King County (11% Hispanic), and Grant County (43.9% Hispanic).

Kittitas County's Native American/Other Population

608 residents of Kittitas County, or 1.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Kittitas County is comparable to the share in Washington overall, where 2.1% of the population is Native American/Other. Kittitas County ranks 28th statewide in terms of Native American/Other residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's Native American/Other population has declined by an estimated 17.8%. Native American/Other residents' share of Kittitas County's population has remained roughly unchanged at 1.3%.

Kittitas County is more Native American/Other than neighboring Douglas County (1.1% Native American/Other), and Grant County (0.8% Native American/Other). Kittitas County is less Native American/Other than neighboring Yakima County (3.1% Native American/Other), and King County (1.7% Native American/Other).

Kittitas County's Multiracial Population

2,897 residents of Kittitas County, or 6.1% of the population, identify as Multiracial. The share of Multiracial residents in Kittitas County is comparable to the share in Washington overall, where 6.8% of the population is Multiracial. Kittitas County ranks 24th statewide in terms of Multiracial residents as a share of the population, out of 39 counties.

Since the 2020 Census, Kittitas County's Multiracial population has grown by an estimated 21.1%. Multiracial residents' share of Kittitas County's population has increased from 5.4% to 6.1%.

Kittitas County is more Multiracial than neighboring Yakima County (3.5% Multiracial), Chelan County (3.4% Multiracial), Douglas County (4.4% Multiracial), and Grant County (4.1% Multiracial). Kittitas County is less Multiracial than neighboring King County (7.3% 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.