Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Oklahoma County, Oklahoma
EPA puts Oklahoma County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 8.4% of 119 (2008 to 2017, laboratory totals) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
8.4%
4.3 pts below OK
- Oklahoma
- 8.4%
- Oklahoma
- 12.7%
119 tests, 2008 to 2017
Median result
0.8pCi/L
Below action level
- Oklahoma
- 0.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
119
2nd of 4 by tests
- Oklahoma
- 119
- Tulsa
- 306
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Oklahoma
3 of 4
Middle half
- Oklahoma
- 8.4%
- Delaware
- 41.9%
By share, of 4 with 30+ tests
Read a result for Oklahoma County
Starts at Oklahoma County's median, 0.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.8 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Oklahoma County's median reported result, 2008 to 2017.
The data
Oklahoma County, At a glance
Oklahoma County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Oklahoma County, 2008 to 2017, laboratory
Under 2 pCi/L: 77%2 to 4 pCi/L: 15%4 pCi/L and above: 8%
Of 119 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 91 | 76.5% |
| 2 to 4 pCi/L | 18 | 15.1% |
| 4 pCi/L and above | 10 | 8.4% |
What these figures count
These are the 119 tests reported to CDC for Oklahoma County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Oklahoma County, Compared
Oklahoma County radon figures, compared
Calculated by Radon411Oklahoma County reports fewer high tests than Oklahoma overall. 8.4% of its 119 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 4.3 points below the 12.7% pooled from 52 Oklahoma counties.
Ordered from highest share down, it comes 3rd of 4 Oklahoma counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Oklahoma County sits 27.3 points below it.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 8.4% share point the same way here.
Half the tests came in under 0.8 pCi/L and half over it; the single highest reached 29.7 pCi/L. The rest split 76.5% under 2 pCi/L and 15.1% from 2 to 4 (Oklahoma: 68.7% and 18.7%).
CDC's ten-year totals for Oklahoma County went from 130 tests (2005 to 2014) to 119 (2008 to 2017), the share going from 8.5% to 8.4%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Oklahoma County, Geology
The ground under Oklahoma County
PredictedUSGS's geologic map puts all of Oklahoma County's mapped land in one class: low radon potential. All of it lies in the area the map calls Central Oklahoma Plains and Hills, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Oklahoma Plains and Hills | Nonmarine Permian and Tertiary rocks, including shale, sandstone, and conglomerate in the western part, and Mississippian and Pennsylvanian rocks in the eastern part. | Low | 7 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Oklahoma County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Oklahoma County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Oklahoma County, Local resources
Radon testing and mitigation in Oklahoma County
- Oklahoma's radon programDepartment of Environmental QualityOklahoma's radon program answers questions about testing, mitigation and the rules in Oklahoma.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Oklahoma directoryNo professionals are listed in Oklahoma yet. The state program can point you to registered testers and mitigators.
What it means
Oklahoma County, Questions
Questions about radon in Oklahoma County
Are radon levels high in Oklahoma County?
Over the 2008 to 2017 laboratory totals, 8.4% of the radon tests reported to CDC for Oklahoma County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.8 pCi/L. Of 4 Oklahoma counties with 30 or more tests for the same period, 2 reported a higher share; pooled, the state comes to 12.7%.
Which counties border Oklahoma County?
Oklahoma County borders 6 counties: Logan County, Cleveland County, Lincoln County, Canadian County, Pottawatomie County and Kingfisher County.
Products
Oklahoma County, Products
Testing a home in Oklahoma County
In Oklahoma County, 8.4% of 119 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 12.7% pooled across Oklahoma. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Oklahoma County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoBlu plug-in digital radon monitor with a display
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Oklahoma County, Bordering counties
Counties bordering Oklahoma County
Calculated by Radon411- Radon levels in Canadian CountyEPA zone 3
19.0%at or above 4 pCi/L
Median 0.6 pCi/L · 21 tests · 10.6 points above Oklahoma County
- Radon levels in Pottawatomie CountyEPA zone 3
11.1%at or above 4 pCi/L
Median 0.1 pCi/L · 9 tests · 2.7 points above Oklahoma County
- Radon levels in Logan CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 8 tests · 8.4 points below Oklahoma County
- Radon levels in Cleveland CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 24 tests · 8.4 points below Oklahoma County
- Radon levels in Lincoln CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 4 tests · 8.4 points below Oklahoma County
- Radon levels in Kingfisher CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 2 tests · 8.4 points below Oklahoma County
Oklahoma County, Cities and towns
Cities and towns in Oklahoma County
The Census Bureau estimates 822,125 residents in Oklahoma County for July 1, 2025, 23,873 more than in 2020 (+3.0%). Packed into its land, that is 1,160 people per square mile. Oklahoma City, the largest place on its list (719,849 residents in all), extends beyond Oklahoma County, so no share of the total is worked out for it. CDC's 119 reported tests for 2008 to 2017 work out to 0.1 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.
From Oklahoma City to Smith Village, CDC publishes no figure by town: each reads Oklahoma County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Oklahoma Cityextends beyond Oklahoma County | 719,849 | +5.4% | Counted whole |
| Edmond | 100,479 | +6.1% | 12.2% |
| Midwest City | 58,799 | +0.6% | 7.2% |
| Del City | 21,138 | −3.0% | 2.6% |
| Bethany | 20,315 | −2.4% | 2.5% |
| Choctaw | 12,549 | +2.4% | 1.5% |
| Warr Acres | 10,552 | −0.2% | 1.3% |
| The Village | 9,276 | −3.0% | 1.1% |
| Harrah | 7,212 | +10.4% | 0.9% |
| Nichols Hills | 3,864 | −0.2% | 0.5% |
| Spencer | 3,857 | −3.1% | 0.5% |
| Jones | 3,222 | +11.1% | 0.4% |
- Nicoma Park
- Luther
- Forest Park
- Valley Brook
- Arcadia
- Woodlawn Park
- Lake Aluma
- Smith Village
20 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Oklahoma County is counted whole, so it has no share.
Oklahoma County, Homes
Homes in Oklahoma County
Of Oklahoma County's 356,997 homes, 69% are detached houses, against 73% across Oklahoma; 18% are in buildings of five or more homes. Half of its homes were built before 1977, close to Oklahoma's 1980: 24% date from before 1960 and 23% from 2000 or later. 59% of occupied homes are lived in by their owner (Oklahoma: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Oklahoma County | Oklahoma |
|---|---|---|
| Housing units | 356,997 | 1,763,036 |
| Detached houses | 69% | 73% |
| In buildings of 5 or more | 18% | 12% |
| Mobile homes | 3% | 9% |
| Built before 1960 | 24% | 21% |
| Built since 2000 | 23% | 25% |
| Middle year built | 1977 | 1980 |
| Owner-occupied | 59% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.