Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Cotton County, Oklahoma
EPA puts Cotton County in Zone 3, its lowest radon zone. 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, 103 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
- Cotton
- 0.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
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 Cotton 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
Cotton County, At a glance
Cotton 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
No CDC test figures here
CDC has published no radon test figures for Cotton County. Oklahoma County, 103 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Cotton County, Compared
Cotton County radon figures, compared
Calculated by Radon411Cotton County has no radon test figure of its own from CDC, whose counts over the 2006 to 2015 laboratory totals name 53 other Oklahoma counties and leave it out. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.
The nearest counties with a figure are Oklahoma County (103 miles away) at 8.9%, Tulsa County (187 miles away) at 6.0% and Washington County (217 miles away) at 11.3%. 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 Cotton 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.
Cotton County, Geology
The ground under Cotton County
PredictedUSGS's geologic map puts all of Cotton 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 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cotton County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Cotton 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
Cotton County, Local resources
Radon testing and mitigation in Cotton 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
Cotton County, Questions
Questions about radon in Cotton County
Are radon levels high in Cotton County?
No CDC testing statistics are published here for Cotton County, Oklahoma yet. Of the 5 nearest counties with a figure, within 249 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Cotton County?
Cotton County borders 6 counties: Wichita County, TX, Comanche County, OK, Stephens County, OK, Tillman County, OK, Jefferson County, OK and Clay County, TX.
Products
Cotton County, Products
Testing a home in Cotton County
No CDC figure names Cotton County; the nearest county with one, Oklahoma County (103 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 Cotton County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Cotton County, Bordering counties
Counties bordering Cotton County
Calculated by Radon411- Radon levels in Comanche County, OKEPA zone 3
9.1%at or above 4 pCi/L
Median 0.6 pCi/L · 11 tests
- Radon levels in Wichita County, TXEPA zone 3
7.1%at or above 4 pCi/L
Median 0.8 pCi/L · 14 tests
- Radon levels in Stephens County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 2 tests
- Radon levels in Jefferson County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Tillman County, OKEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Clay County, TXEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Cotton County, Cities and towns
Cities and towns in Cotton County
About 5,432 people live in Cotton County by the Census Bureau's estimate for July 1, 2025, 108 fewer than in 2020 (−1.9%). Spread over its land, that is 8.6 people to the square mile. Its largest town, Walters, has 2,355 residents, 43.4% of the total. Together its 4 incorporated places hold 65.9% of those residents; the other 34.1% live outside any of them. CDC publishes no radon test count for Cotton County; across Oklahoma its counts for 2006 to 2015 come to 0.2 tests for every 1,000 residents (2025 estimate).
From Walters to Devol, CDC publishes no figure by town: each reads Cotton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Walters | 2,355 | −2.5% | 43.4% |
| Temple | 837 | −2.8% | 15.4% |
| Randlett | 291 | Level | 5.4% |
| Devol | 94 | Level | 1.7% |
4 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).
Cotton County, Homes
Homes in Cotton County
Cotton County is a place of houses on their own lots: 83% of its 2,707 homes are detached single-family houses, against 73% across Oklahoma. The homes are older than Oklahoma's as a whole: half were built before 1970 (1980 for Oklahoma), and 37% date from before 1960. 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 | Cotton County | Oklahoma |
|---|---|---|
| Housing units | 2,707 | 1,763,036 |
| Detached houses | 83% | 73% |
| In buildings of 5 or more | 2% | 12% |
| Mobile homes | 12% | 9% |
| Built before 1960 | 37% | 21% |
| Built since 2000 | 8% | 25% |
| Middle year built | 1970 | 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.