Dennis, Oklahoma Demographics & Population 2026
During the 2020–2024 ACS period, Dennis, Oklahoma had a total population of 396, the 408th largest community in Oklahoma, with a median household income of $87,589, which is 35% higher than the state average. The poverty rate is 16.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 35% above the state average — one of the wealthiest communities in Oklahoma.
Dennis Quick Facts
How Dennis Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 206 | 396 | +92.2% |
| Median household income | $72,375 | $87,589 | +21.0% |
How Dennis Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 58 | National average: 61
Education
Educational Attainment (Adults 25+)
Dennis Rankings in Oklahoma
Explore Oklahoma Rankings
Other Cities in Delaware County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Grove | 7,176 | $58,941 | 18.1% | $244,300 |
| Jay | 2,731 | $38,094 | 23.5% | $107,900 |
| Cleora | 1,477 | $82,321 | 14.5% | $230,800 |
| Copeland | 1,401 | $57,558 | 16.1% | $123,500 |
| West Siloam Springs | 1,286 | $59,904 | 19.6% | $183,800 |
| Kenwood | 1,284 | $58,135 | 18.5% | $104,100 |
| Colcord | 910 | $31,094 | 25.6% | $93,600 |
| Kansas | 748 | $33,438 | 34.4% | $77,500 |
| Flint Creek | 627 | $48,036 | 44.5% | $109,800 |
| Ketchum | 499 | $55,000 | 19.0% | $203,800 |
Cities Similar to Dennis
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Hardesty | 404 | $87,808 | $47,600 | 45.9% | 27.5% |
| McCurtain | 410 | N/A | $46,000 | 8.5% | 39.4% |
| Gregory | 383 | $89,563 | $360,500 | 35.5% | 0.0% |
| Baron | 413 | $90,583 | $173,800 | 14.3% | 0.0% |
| Leedey | 406 | $78,472 | $107,600 | 32.8% | 6.2% |
A note before these figures: with a population of 396, Dennis's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.
Population Overview
Dennis is a small community located in Oklahoma, within Delaware County. The total population is 396. It ranks as the 408th most populous out of 834 Census-designated places in Oklahoma.
Age Demographics
The median age in Dennis is 59.2 years. This is 60% higher than the state median of 37.0 years. Only 14.6% of residents are under 18, indicating fewer families with children.
Economy, Income & Housing
The median household income in Dennis is $87,589. This is 35% higher than the state median of $65,039. It is also 8% higher than the national median of $80,734. The poverty rate stands at 16.7%. This is 9% higher than the state poverty rate of 15.3%. The survey records no unemployed residents in Dennis, which reflects the size of the sample rather than a labor market without joblessness. 82.8% of occupied housing units are owner-occupied. This homeownership rate is 26% higher than the state average of 65.8%.
Race & Ethnicity
The largest racial or ethnic group in Dennis is White (non-Hispanic), making up 81.8% of the population.
Education
28.3% of residents aged 25 and older hold a bachelor's degree or higher. This is about the same as the state rate of 28.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 83.4%.
Data Sources & Methodology
All demographic data for Dennis, Oklahoma is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Oklahoma state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 834 Census-designated places in Oklahoma. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
Free data download: Get all Oklahoma city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Dennis, Oklahoma?
Dennis, Oklahoma has a population of 396 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Dennis, OK?
The median household income in Dennis is $87,589, which is 8% higher than the national median of $80,734.
What is the poverty rate in Dennis, OK?
The poverty rate in Dennis is 16.7%. This means approximately 66 residents live below the federal poverty line.
What is the racial makeup of Dennis, Oklahoma?
Dennis's population is 81.8% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Dennis, OK?
The Census Bureau does not publish a reliable median home value estimate for Dennis — there are too few owner-occupied homes in the ACS sample. The national median is $332,700.
How educated is Dennis, Oklahoma?
28.3% of adults (25+) in Dennis hold a bachelor's degree or higher, and 9.8% hold a graduate or professional degree.