Dewey County's 2026 population is estimated at 4,298, reflecting a 0.35% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Dewey County is the 71st largest county in Oklahoma. The 2010 population was 4,809 and has grown -10.63% since 2010.
Data after 2023 is projected based on recent change
Overall: 38.5 years
Female: 41 years
Male: 36.7 years
There are 3,168 adults, (853 of whom are seniors) in Dewey County.
Female: 2,185 (50.1%)
Male: 2,175 (49.9%)
The racial composition of Dewey County includes 82.78% White, 3.69% Native American, and smaller percentages for other race, Asian, Black or African American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 3,609 | 82.78% |
| Two or more races | 544 | 12.48% |
| Native American | 161 | 3.69% |
| Other race | 39 | 0.89% |
| Asian | 4 | 0.09% |
| Black or African American | 3 | 0.07% |
Dewey County 's average per capita income is $43,393. Household income levels show a median of $62,569. The poverty rate stands at 14.11%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $83,938 | - |
| Families | $73,932 | $92,921 |
| Households | $62,569 | $81,140 |
| Non Families | $37,813 | $53,889 |
Average Income
Median Household Income
Poverty Rate
