Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Comanche County, Oklahoma
EPA puts Comanche County in Zone 3, its lowest radon zone, and only 10 radon tests from it are 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, 86 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
- Comanche
- 0.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
11
Too few for a share
- Comanche
- 11
- Needed
- 30
2006 to 2015, 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 Comanche 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
Comanche County, At a glance
Comanche 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 Comanche County, 2008 to 2017, laboratory
CDC holds 10 reported tests for Comanche County over the 2008 to 2017 laboratory totals, with a median of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Comanche County beside the counties around it is how this page reads it.
What these figures count
Only 10 tests were reported to CDC for Comanche 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: 2005 to 2017 (every CDC figure on file).
Comanche County, Compared
Comanche County radon figures, compared
Calculated by Radon411CDC's largest figure for Comanche County rests on 11 tests over the 2006 to 2015 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 9.1 points and no rank or comparison is drawn from it. Results reached as high as 5.7 pCi/L, with a middle value of 0.6 pCi/L.
The nearest counties with a figure are Oklahoma County (86 miles away) at 8.9%, Tulsa County (175 miles away) at 6.0% and Washington County (202 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 Comanche 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.
Comanche County, Geology
The ground under Comanche County
PredictedUSGS's geologic map puts all of Comanche County's mapped land in one class: low radon potential. The map puts 59.0% of Comanche County in the area it calls Wichita Mountains and 41.0% in Central Oklahoma Plains and Hills. USGS gives the first a radon index of 6 and the second 7, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Wichita Mountains | Granite, rhyolite, abd gabbro. | Low | 6 | 59.0% |
| 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 | 41.0% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Comanche County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Comanche 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
Comanche County, Local resources
Radon testing and mitigation in Comanche 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
Comanche County, Questions
Questions about radon in Comanche County
Are radon levels high in Comanche County?
Over the 2008 to 2017 laboratory totals, 10.0% of the radon tests reported to CDC for Comanche County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Of the 5 nearest counties with a figure, within 239 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Comanche County?
Comanche County borders 6 counties: Kiowa County, Cotton County, Tillman County, Caddo County, Stephens County and Grady County.
Products
Comanche County, Products
Testing a home in Comanche County
No CDC figure names Comanche County; the nearest county with one, Oklahoma County (86 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 Comanche 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
RadonScan USB-powered radon monitor with a color screen
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 5 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Comanche County, Bordering counties
Counties bordering Comanche County
Calculated by Radon411- Radon levels in Stephens CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 2 tests
- Radon levels in Grady CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 2 tests
- Radon levels in Kiowa CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Cotton CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Tillman CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Caddo CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Comanche County, Cities and towns
Cities and towns in Comanche County
The Census Bureau estimates 122,158 residents in Comanche County for July 1, 2025, 1,008 more than in 2020 (+0.8%). That works out to 114 people per square mile of land. Lawton alone is home to 90,503 of them, 74.1% of the total. Reported testing is thin here: 11 tests over 2006 to 2015, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.
From Lawton to Faxon, CDC publishes no figure by town: each reads Comanche County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Lawton | 90,503 | +0.1% | 74.1% |
| Elgin | 3,653 | +2.5% | 3.0% |
| Cache | 3,239 | +10.1% | 2.7% |
| Fletcher | 1,274 | +5.2% | 1.0% |
| Geronimo | 1,188 | +2.5% | 1.0% |
| Sterling | 674 | −0.1% | 0.6% |
| Medicine Park | 497 | +20.6% | 0.4% |
| Chattanoogaextends beyond Comanche County | 410 | +1.0% | Counted whole |
| Indiahoma | 276 | −0.4% | 0.2% |
| Faxon | 117 | +1.7% | Under 0.1% |
10 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 Comanche County is counted whole, so it has no share.
Comanche County, Homes
Homes in Comanche County
Of Comanche County's 52,647 homes, 72% are detached houses, against 73% across Oklahoma; 13% are in buildings of five or more homes. Half of its homes were built before 1977, close to Oklahoma's 1980: 22% date from before 1960 and 20% from 2000 or later. 55% 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 | Comanche County | Oklahoma |
|---|---|---|
| Housing units | 52,647 | 1,763,036 |
| Detached houses | 72% | 73% |
| In buildings of 5 or more | 13% | 12% |
| Mobile homes | 5% | 9% |
| Built before 1960 | 22% | 21% |
| Built since 2000 | 20% | 25% |
| Middle year built | 1977 | 1980 |
| Owner-occupied | 55% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.