How many people live in Delaware County, OK?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 41,800 people living in Delaware County, OK. That makes Delaware County the 25th-most populous county in Oklahoma. It is home to 1% of people living in the state.
41.8K
population of Delaware County, OK (2024)
1%
County share of the Oklahoma population (2024)
About 41,800 people lived in Delaware County, OK in 2024.
Population estimates, 2000–2024
What are Delaware County, OK’s age demographics?
About 11,000 Delaware County residents are aged 65 and older in 2024. That represents 26.3% of its population. For comparison, the age group represents 17% of Oklahoma’s population and 18% in the US overall.
Another 8,200 Delaware County residents, or 19.5% 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 Delaware County, OK's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Delaware County, OK’s racial and ethnic demographics?
Non-Hispanic white residents make up 62.5% of the Delaware County population, higher than the national share of 57.5%. Delaware County also has a larger share of people identifying as non-Hispanic American Indian and Alaska Native (22.7%) than the US overall (0.72%).
In contrast, Delaware County’s Hispanic population accounts for 4.9%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 0.6% 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.
Delaware County, OK has a higher share of a non-Hispanic American Indian and Alaska Native population than Oklahoma as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Delaware County, OK is Grove with about 7,300 residents in 2024.
Cities and towns in Delaware County, OK ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Grove | 7,327 |
| 2. | Jay | 2,474 |
| 3. | West Siloam Springs | 1,068 |
| 4. | Colcord | 753 |
| 5. | Kansas | 753 |
| 6. | Bernice | 433 |
| 7. | Oaks (pt.) | 268 |
| 8. | Ketchum (pt.) | 30 |
| 9. | Vinita (pt.) | 19 |
| 10. | Balance of Delaware County | 28,646 |
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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.
