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 Noble County, Oklahoma
EPA puts Noble County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2007 to 2016, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
8.9%
Oklahoma County, 59 miles
- Oklahoma
- 8.9%
- Oklahoma
- 12.6%
Share at 4+ pCi/L, 135 tests, 2006 to 2015
Ground above low
None
15.2 pts below Oklahoma
- Noble
- 0.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Noble
- 1
- Needed
- 30
2007 to 2016, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Noble County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.
The data
Noble County, At a glance
Noble 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 Noble County, 2007 to 2016, laboratory
CDC holds 1 reported test for Noble County over the 2007 to 2016 laboratory totals, a result of 1.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Noble County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Noble County over 2007 to 2016 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2007 to 2016, laboratory. Measured data period: 2005 to 2016 (every CDC figure on file).
Noble County, Compared
Noble County radon figures, compared
Calculated by Radon411CDC's largest figure for Noble County rests on 1 test over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 1.1 pCi/L, with a middle value of 1.1 pCi/L.
The nearest counties with a figure are Oklahoma County (59 miles away) at 8.9%, Tulsa County (74 miles away) at 6.0% and Washington County (77 miles away) at 11.3%. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Delaware County reported the highest share (44.7%) and Tulsa County the lowest (6.0%). EPA's 1993 map puts Noble County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Noble County, Geology
The ground under Noble County
PredictedUSGS's geologic map puts all of Noble 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.
Noble County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Noble County's is. None of the 7 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Noble County, Local resources
Radon testing and mitigation in Noble 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
Noble County, Questions
Questions about radon in Noble County
Are radon levels high in Noble County?
Over the 2007 to 2016 laboratory totals, 0.0% of the radon tests reported to CDC for Noble County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Of the 5 nearest counties with a figure, within 135 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Noble County?
Noble County borders 7 counties: Pawnee County, Payne County, Garfield County, Kay County, Logan County, Grant County and Osage County.
Products
Noble County, Products
Testing a home in Noble County
No CDC figure names Noble County; the nearest county with one, Oklahoma County (59 miles away), reported 8.9% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. 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 Noble 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
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Noble County, Bordering counties
Counties bordering Noble County
Calculated by Radon411- Radon levels in Grant CountyEPA zone 3
50.0%at or above 4 pCi/L
Median 4.0 pCi/L · 6 tests
- Radon levels in Kay CountyEPA zone 3
27.6%at or above 4 pCi/L
Median 2.5 pCi/L · 29 tests
- Radon levels in Payne CountyEPA zone 3
6.3%at or above 4 pCi/L
Median 0.8 pCi/L · 16 tests
- Radon levels in Garfield CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.0 pCi/L · 7 tests
- Radon levels in Logan CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 6 tests
- Radon levels in Osage CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 3 tests
- Radon levels in Pawnee CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Noble County, Cities and towns
Cities and towns in Noble County
Noble County's population has barely moved since 2020: 10,899 residents on July 1, 2025 against 10,925 then, by the Census Bureau's estimates. That works out to 15 people per square mile of land. Its largest town, Perry, has 4,448 residents, 40.8% of the total. Together its 5 incorporated places hold 56.7% of those residents; the other 43.3% live outside any of them. Reported testing is thin here: 1 test over 2007 to 2016, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.
From Perry to Marland, CDC publishes no figure by town: each reads Noble County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Perry | 4,448 | −1.0% | 40.8% |
| Morrison | 725 | −0.7% | 6.7% |
| Billings | 571 | −0.7% | 5.2% |
| Red Rock | 248 | −0.4% | 2.3% |
| Marland | 187 | +2.2% | 1.7% |
5 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
Noble County, Homes
Homes in Noble County
Noble County is a place of houses on their own lots: 80% of its 5,067 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1975, close to Oklahoma's 1980: 34% date from before 1960 and 17% from 2000 or later. Owners live in 80% of the occupied homes (Oklahoma: 66%), so for most households a test and a fix are their own to order.
| Homes | Noble County | Oklahoma |
|---|---|---|
| Housing units | 5,067 | 1,763,036 |
| Detached houses | 80% | 73% |
| In buildings of 5 or more | 2% | 12% |
| Mobile homes | 14% | 9% |
| Built before 1960 | 34% | 21% |
| Built since 2000 | 17% | 25% |
| Middle year built | 1975 | 1980 |
| Owner-occupied | 80% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.