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 Roger Mills County, Oklahoma
EPA puts Roger Mills County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2008 to 2017, 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, 129 miles
- Oklahoma
- 8.9%
- Oklahoma
- 12.6%
Share at 4+ pCi/L, 135 tests, 2006 to 2015
Ground above low
34.2%
19.0 pts above Oklahoma
- Roger Mills
- 34.2%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Roger Mills
- 1
- Needed
- 30
2008 to 2017, 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 Roger Mills 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
Roger Mills County, At a glance
Roger Mills County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 66% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Roger Mills County, 2008 to 2017, laboratory
CDC holds 1 reported test for Roger Mills County over the 2008 to 2017 laboratory totals, a result of 3.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Roger Mills County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Roger Mills County over 2008 to 2017 (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: 2008 to 2017, laboratory. Measured data period: 2006 to 2017 (every CDC figure on file).
Roger Mills County, Compared
Roger Mills County radon figures, compared
Calculated by Radon411CDC's largest figure for Roger Mills County rests on 1 test over the 2008 to 2017 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 3.2 pCi/L, with a middle value of 3.2 pCi/L.
The nearest counties with a figure are Oklahoma County (129 miles away) at 8.9%, Tulsa County (213 miles away) at 6.0% and Washington County (223 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 Roger Mills County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 66% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Roger Mills County, Geology
The ground under Roger Mills County
PredictedUSGS's geologic map splits Roger Mills County: 65.8% of its land is low radon potential and 34.2% moderate. The map puts 65.8% of Roger Mills County in the area it calls Central Oklahoma Plains and Hills and 34.2% in High Plains. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).
| 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 | 65.8% |
| High Plains | Tertiary sandstone, siltstone, shale. | Moderate | 9 | 34.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Roger Mills County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Roger Mills County's is. Of the 6 counties that border it, 3 have more moderate-potential ground, Hemphill County, TX the most at 100%.
The map rates the ground, not the air in any home.
Local help
Roger Mills County, Local resources
Radon testing and mitigation in Roger Mills 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
Roger Mills County, Questions
Questions about radon in Roger Mills County
Are radon levels high in Roger Mills County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Roger Mills County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.2 pCi/L. Of the 5 nearest counties with a figure, within 278 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Roger Mills County?
Roger Mills County borders 6 counties: Beckham County, OK, Hemphill County, TX, Ellis County, OK, Custer County, OK, Dewey County, OK and Wheeler County, TX.
Products
Roger Mills County, Products
Testing a home in Roger Mills County
No CDC figure names Roger Mills County; the nearest county with one, Oklahoma County (129 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 Roger Mills 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
Roger Mills County, Bordering counties
Counties bordering Roger Mills County
Calculated by Radon411- Radon levels in Dewey County, OKEPA zone 3
33.3%at or above 4 pCi/L
Median 3.3 pCi/L · 6 tests
- Radon levels in Beckham County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 5 tests
- Radon levels in Hemphill County, TXEPA zone 2
0.0%at or above 4 pCi/L
Median 3.9 pCi/L · 1 test
- Radon levels in Custer County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 2.3 pCi/L · 2 tests
- Radon levels in Wheeler County, TXEPA zone 3
0.0%at or above 4 pCi/L
Median 3.0 pCi/L · 2 tests
- Radon levels in Ellis County, OKEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Roger Mills County, Cities and towns
Cities and towns in Roger Mills County
Roger Mills County has been losing residents: from 3,431 in 2020 to 3,259 on July 1, 2025, a fall of 5.0% by the Census Bureau's estimates. Spread over its land, that is 2.9 people to the square mile. Its largest town, Cheyenne, has 725 residents, 22.2% of the total. Testing is reported here more often than across the state: CDC's 1 reported test for 2008 to 2017 come to 0.3 for every 1,000 residents (2025 estimate), against 0.2 for Oklahoma.
From Cheyenne to Strong City, CDC publishes no figure by town: each reads Roger Mills County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Cheyenne | 725 | −5.6% | 22.2% |
| Hammonextends beyond Roger Mills County | 455 | −4.0% | Counted whole |
| Reydon | 130 | −5.8% | 4.0% |
| Sweetwaterextends beyond Roger Mills County | 105 | +1.9% | Counted whole |
| Strong City | 31 | −3.1% | 1.0% |
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). A place that extends beyond Roger Mills County is counted whole, so it has no share.
Roger Mills County, Homes
Homes in Roger Mills County
Roger Mills County is a place of houses on their own lots: 85% of its 1,850 homes are detached single-family houses, against 73% across Oklahoma. The homes are older than Oklahoma's as a whole: half were built before 1971 (1980 for Oklahoma), and 38% date from before 1960. Owners live in 81% of the occupied homes (Oklahoma: 66%), so for most households a test and a fix are their own to order.
| Homes | Roger Mills County | Oklahoma |
|---|---|---|
| Housing units | 1,850 | 1,763,036 |
| Detached houses | 85% | 73% |
| In buildings of 5 or more | under 1% | 12% |
| Mobile homes | 11% | 9% |
| Built before 1960 | 38% | 21% |
| Built since 2000 | 14% | 25% |
| Middle year built | 1971 | 1980 |
| Owner-occupied | 81% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.