Washington County Demographics

A map of Washington County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	37,430	35,208	70.2%	67.1%
Multiracial	5,453	6,266	10.2%	11.9%
Native American/Other	4,404	5,325	8.3%	10.2%
Hispanic	3,694	3,360	6.9%	6.4%
Black	1,275	1,322	2.4%	2.5%
Asian	1,070	974	2.0%	1.9%

Washington County, Oklahoma has an estimated population of 53,326, a slight increase from the 52,455 recorded in the 2020 Census. The population is 70.2% White, 10.2% Multiracial, 8.3% Native American/Other, 6.9% Hispanic, 2.4% Black, and 2.0% Asian. This demographic dot map shows the population of Washington County, with one dot drawn for each person counted by the Census, color-coded by race.

Washington has become less racially diverse since the 2020 Census. It is considerably less diverse than Oklahoma overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Washington County, that probability was 52.0% in 2020 and 48.4% in the most recent ACS estimates.

Washington County is ranked the 14th most populous county in Oklahoma, out of 77 counties. Washington County was ranked the 14th most populous county in the 2020 Census.

Washington County's White Population

37,430 residents of Washington County, or 70.2% of the population, identify as White. The share of White residents in Washington County is higher than in Oklahoma overall, where 62.1% of the population is White. Washington County ranks 36th statewide in terms of White residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's White population has grown by an estimated 6.3%. White residents' share of Washington County's population has increased from 67.1% to 70.2%.

Washington County is more White than neighboring Nowata County (64.5% White), Rogers County (69% White), and Osage County (62.1% White). Washington County is less White than neighboring Montgomery County (76.5% White), and Chautauqua County (80.1% White).

Washington County's Black Population

1,275 residents of Washington County, or 2.4% of the population, identify as Black. The share of Black residents in Washington County is slightly lower than in Oklahoma overall, where 6.8% of the population is Black. Washington County ranks 35th statewide in terms of Black residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's Black population has declined by an estimated 3.6%. Black residents' share of Washington County's population has remained roughly unchanged at 2.4%.

Washington County is more Black than neighboring Nowata County (1.7% Black), Rogers County (0.9% Black), and Chautauqua County (0.8% Black). Washington County is less Black than neighboring Osage County (10.1% Black), and Montgomery County (3.8% Black).

Washington County's Asian Population

1,070 residents of Washington County, or 2.0% of the population, identify as Asian. The share of Asian residents in Washington County is comparable to the share in Oklahoma overall, where 2.4% of the population is Asian. Washington County ranks 8th statewide in terms of Asian residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's Asian population has grown by an estimated 9.9%. Asian residents' share of Washington County's population has remained roughly unchanged at 2.0%.

Washington County is more Asian than neighboring Nowata County (0.7% Asian), Rogers County (1.9% Asian), Osage County (0.3% Asian), Montgomery County (0.2% Asian), and Chautauqua County (0.1% Asian).

Washington County's Hispanic Population

3,694 residents of Washington County, or 6.9% of the population, identify as Hispanic. The share of Hispanic residents in Washington County is lower than in Oklahoma overall, where 12.7% of the population is Hispanic. Washington County ranks 46th statewide in terms of Hispanic residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's Hispanic population has grown by an estimated 9.9%. Hispanic residents' share of Washington County's population has increased from 6.4% to 6.9%.

Washington County is more Hispanic than neighboring Nowata County (3.2% Hispanic), Rogers County (6.2% Hispanic), Osage County (4.7% Hispanic), and Chautauqua County (5% Hispanic). Washington County is less Hispanic than neighboring Montgomery County (8.1% Hispanic).

Washington County's Native American/Other Population

4,404 residents of Washington County, or 8.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Washington County is comparable to the share in Oklahoma overall, where 7.1% of the population is Native American/Other. Washington County ranks 36th statewide in terms of Native American/Other residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's Native American/Other population has declined by an estimated 17.3%. Native American/Other residents' share of Washington County's population has decreased from 10.2% to 8.3%.

Washington County is more Native American/Other than neighboring Montgomery County (2.8% Native American/Other), and Chautauqua County (5.8% Native American/Other). Washington County is less Native American/Other than neighboring Nowata County (15.7% Native American/Other), Rogers County (12.7% Native American/Other), and Osage County (10.9% Native American/Other).

Washington County's Multiracial Population

5,453 residents of Washington County, or 10.2% of the population, identify as Multiracial. The share of Multiracial residents in Washington County is comparable to the share in Oklahoma overall, where 8.9% of the population is Multiracial. Washington County ranks 11th statewide in terms of Multiracial residents as a share of the population, out of 77 counties.

Since the 2020 Census, Washington County's Multiracial population has declined by an estimated 13.0%. Multiracial residents' share of Washington County's population has decreased from 11.9% to 10.2%.

Washington County is more Multiracial than neighboring Rogers County (9.4% Multiracial), Montgomery County (8.7% Multiracial), and Chautauqua County (8.2% Multiracial). Washington County is less Multiracial than neighboring Nowata County (14.2% Multiracial), and Osage County (12% 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.