DennisOK
A town in Oklahoma, home to 396 people.
Is Dennis a good place to live?
Dennis’ average commute is 38 minutes, above both the Oklahoma town median (22 minutes) and the median of U.S. towns (25 minutes). Among 132 Oklahoma towns, just one has a higher median age than Dennis. Dennis has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
396 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to Dennis: who provides what
Dennis is unincorporated, so Delaware County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
The data
Ordered by what stands out in Dennis.
The FEMA risk score in Dennis is higher than in the typical Oklahoma or U.S. town
63% of Dennis’s expected losses from natural hazards come from inland flooding, followed by tornadoes at 11%. Expected storm and flood damage is higher than in 91% of U.S. communities.
FEMA National Risk Index · OpenFEMA
Young adults are less common in Dennis than in Oklahoma
Adults 18 to 34 are 7% of residents (23% statewide); adults 35 to 64 are 51% of residents (37% statewide). A bachelor’s degree or higher: 28% of adults 25 and older, vs 28% across Oklahoma.
Ages · share of residents
Education · adults 25 and older
Women and men · all residents
42% women, 58% men
That’s an even split within the survey’s margin of ±10 points. Across Oklahoma, 50.2% of residents are women.
| Dennis | OK | U.S. | |
|---|---|---|---|
| Under 10 | 2.8% | 12.8% | 11.6% |
| 10 to 17 | 11.9% | 11.2% | 10.3% |
| 18 to 24 | 3.3% | 9.8% | 9.1% |
| 25 to 34 | 4% | 13.5% | 13.7% |
| 35 to 44 | 11.6% | 13.2% | 13.2% |
| 45 to 54 | 9.6% | 11.4% | 12.2% |
| 55 to 64 | 29.3% | 11.9% | 12.7% |
| 65 to 74 | 27.5% | 9.7% | 10.2% |
| 75 and older | 0% | 6.6% | 7% |
| No diploma | 16.6% | 10.6% | 10.4% |
| High school | 36.9% | 30.6% | 26% |
| Some college | 6.8% | 22.1% | 19.1% |
| Associate’s | 11.4% | 8.3% | 8.8% |
| Bachelor’s | 18.5% | 18.5% | 21.6% |
| Graduate | 9.8% | 9.9% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 400, single groups can be off by several points
Dennis stands out in Oklahoma and nationally, with fewer of its working residents who work locally
The median household income in Dennis is $88,000. The top destinations are Jay (19%), Grove (13%) and Tulsa (6%). Dennis: 17% of residents live below the poverty line. Half the trips to work are shorter than 23 miles.
| Dennis | Oklahoma towns | U.S. towns | |
|---|---|---|---|
| Working residents who work in town | 1.5% | 22% | 8% |
| Median household income | $88,000 | $55,000 | $80,000 |
| Below the poverty line | 17% | 18% | 9.6% |
Where working residents work
Census LEHD 2023 · ACS
Four seasons and hot summers in Dennis
Summer afternoons peak near 92° in July, and January nights bottom out around 26°; snowfall runs to about 6 inches a winter. The seasons in Dennis: chilly winters, warm summers.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
How healthy Dennis is
16% of adults worry about having enough food in Dennis. Of 32 CDC measures, Dennis beats the Oklahoma average on 8 and trails it on 12. Only 3 of the 132 Oklahoma towns we compare have a lower share of adults who feel lonely than Dennis. In Dennis, 56% of adults have high blood pressure, and 20% report frequent physical distress.
| Dennis | Oklahoma towns | U.S. towns | |
|---|---|---|---|
| Diabetes (CDC PLACES) | 20% | 14% | 12% |
| High blood pressure (CDC PLACES) | 56% | 40% | 35% |
| Frequent physical distress (CDC PLACES) | 20% | 16% | 14% |
| Binge drink (CDC PLACES) | 11% | 14% | 16% |
| What stands out | Dennis | OK |
|---|---|---|
| Fewer adults facing housing insecurity | 9.8% | 14.1% |
| Fewer binge drinkers | 10.5% | 14% |
| More adults with heart disease | 14.3% | 7.3% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Homes in Dennis sell for about $550K
The share of households in Dennis who are owner-occupiers: 83%.
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
0% of Dennis is conserved land
1.7 miles of trail. Dennis’ trail network density is 0.4 miles per square mile.
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Everything we know about Dennis
Colleges nearby
None within 15 miles of Dennis; the nearest are
About 0 of every 100 Dennis residents are enrolled in college, against 6 across Oklahoma.
99% of working residents leave Dennis for work
Where Dennis’s working residents go each day. Line width shows the share.
Census LEHD 2023
About Dennis
Census-designated place in Oklahoma, United States
Dennis is an unincorporated community and census-designated place (CDP) in Delaware County, Oklahoma, near Grand Lake. As of the 2020 census, Dennis had a population of 221. The Dennis Post Office existed from March 25, 1914, until January 31, 1956. It is said to be named for a local resident, Peter Dennis.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 4.5 sq mi
- Elevation
- 886 ft
Questions about Dennis
Short answers, built from the data on this page.
Is Dennis, OK a good place to live?
Dennis has fewer than 1,000 residents, too few for fair grades; the figures below are still real.