How many people live in Dewey County, OK?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 4,300 people living in Dewey County, OK. That makes Dewey County the 71st-most populous county in Oklahoma. It is home to 0.1% of people living in the state.
4.27K
population of Dewey County, OK (2024)
0.1%
County share of the Oklahoma population (2024)
About 4,300 people lived in Dewey County, OK in 2024.
Population estimates, 2000–2024
What are Dewey County, OK’s age demographics?
About 832 Dewey County, OK residents are aged 65 and older in 2024. That represents 19.5% of its population. For comparison, the age group represents 17% of Oklahoma’s population and 18% in the US overall.
Another 1,100 Dewey County, OK residents, or 26.3% of the population, were children under 18. For comparison, the age group represents 23.7% of Oklahoma’s population and 21.6% in the US overall.
A higher share of Dewey County, OK's population is aged under 18 than the US as a whole.
Population estimates by age group, (2024)
What are Dewey County, OK’s racial and ethnic demographics?
Non-Hispanic white residents make up 80.5% of the Dewey County population, higher than the national share of 57.5%. Dewey County also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (6.7%) than the US overall (0.72%).
In contrast, Dewey County’s Hispanic population accounts for 6.2%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.68% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Dewey County, OK has a higher share of a non-Hispanic white population than Oklahoma as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Dewey County, OK is Seiling with about 809 residents in 2024.
Cities and towns in Dewey County, OK ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Seiling (pt.) | 809 |
| 2. | Vici | 583 |
| 3. | Leedey | 393 |
| 4. | Taloga | 276 |
| 5. | Camargo | 183 |
| 6. | Oakwood | 71 |
| 7. | Putnam | 27 |
| 8. | Balance of Dewey County | 1,926 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
