Dewey County Demographics

A map of Dewey County's Population by Race

Dewey County, Oklahoma has an estimated population of 4,360, a slight decrease from the 4,484 recorded in the 2020 Census. The population is 80.8% White, 9.4% Multiracial, 6.0% Hispanic, 3.6% Native American/Other, 0.1% Asian, and 0.0% Black. This demographic dot map shows the population of Dewey County, with one dot drawn for each person counted by the Census, color-coded by race.

Dewey has become more 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 Dewey County, that probability was 30.1% in 2020 and 33.3% in the most recent ACS estimates.

Dewey County is ranked the 71st most populous county in Oklahoma, out of 77 counties. Dewey County was ranked the 71st most populous county in the 2020 Census.

Dewey County's White Population

3,523 residents of Dewey County, or 80.8% of the population, identify as White. The share of White residents in Dewey County is significantly higher than in Oklahoma overall, where 62.1% of the population is White. Dewey County ranks 5th statewide in terms of White residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's White population has declined by an estimated 5.4%. White residents' share of Dewey County's population has decreased from 83.0% to 80.8%.

Dewey County is more White than neighboring Custer County (65.8% White), Woodward County (75.8% White), and Blaine County (70.3% White). Dewey County is less White than neighboring Major County (81.5% White), and Washita County (81.7% White).

Dewey County's Black Population

2 residents of Dewey County, or 0.0% of the population, identify as Black. The share of Black residents in Dewey County is lower than in Oklahoma overall, where 6.8% of the population is Black. Dewey County ranks 73rd statewide in terms of Black residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's Black population has declined by an estimated 71.4%. Black residents' share of Dewey County's population has remained roughly unchanged at 0.0%.

Dewey County is less Black than neighboring Custer County (2.6% Black), Woodward County (1.1% Black), Blaine County (3.9% Black), and Washita County (1.3% Black).

Dewey County's Asian Population

4 residents of Dewey County, or 0.1% of the population, identify as Asian. The share of Asian residents in Dewey County is slightly lower than in Oklahoma overall, where 2.4% of the population is Asian. Dewey County ranks 74th statewide in terms of Asian residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's Asian population has remained roughly the same. Asian residents' share of Dewey County's population has remained roughly unchanged at 0.1%.

Dewey County is more Asian than neighboring Blaine County (0% Asian). Dewey County is less Asian than neighboring Custer County (0.9% Asian), Woodward County (0.4% Asian), and Major County (0.4% Asian).

Dewey County's Hispanic Population

261 residents of Dewey County, or 6.0% of the population, identify as Hispanic. The share of Hispanic residents in Dewey County is lower than in Oklahoma overall, where 12.7% of the population is Hispanic. Dewey County ranks 50th statewide in terms of Hispanic residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's Hispanic population has remained roughly the same. Hispanic residents' share of Dewey County's population has remained roughly unchanged at 6.0%.

Dewey County is less Hispanic than neighboring Custer County (19.9% Hispanic), Woodward County (15.2% Hispanic), Major County (11% Hispanic), Blaine County (12.6% Hispanic), and Washita County (9.7% Hispanic).

Dewey County's Native American/Other Population

158 residents of Dewey County, or 3.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Dewey County is slightly lower than in Oklahoma overall, where 7.1% of the population is Native American/Other. Dewey County ranks 51st statewide in terms of Native American/Other residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's Native American/Other population has declined by an estimated 37.5%. Native American/Other residents' share of Dewey County's population has decreased from 5.6% to 3.6%.

Dewey County is more Native American/Other than neighboring Woodward County (3% Native American/Other), Major County (1.2% Native American/Other), and Washita County (2.1% Native American/Other). Dewey County is less Native American/Other than neighboring Custer County (4.4% Native American/Other), and Blaine County (6.1% Native American/Other).

Dewey County's Multiracial Population

412 residents of Dewey County, or 9.4% of the population, identify as Multiracial. The share of Multiracial residents in Dewey County is comparable to the share in Oklahoma overall, where 8.9% of the population is Multiracial. Dewey County ranks 63rd statewide in terms of Multiracial residents as a share of the population, out of 77 counties.

Since the 2020 Census, Dewey County's Multiracial population has grown by an estimated 73.8%. Multiracial residents' share of Dewey County's population has increased from 5.3% to 9.4%.

Dewey County is more Multiracial than neighboring Custer County (6.4% Multiracial), Woodward County (4.5% Multiracial), Major County (5.9% Multiracial), Blaine County (7.1% Multiracial), and Washita County (5.2% 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.