Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Woods County, Oklahoma
EPA puts Woods 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, 117 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
- Woods
- 0.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Woods
- 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 Woods 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
Woods County, At a glance
Woods 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 Woods County, 2008 to 2017, laboratory
CDC holds 1 reported test for Woods County over the 2008 to 2017 laboratory totals, a result of 1.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Woods County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Woods 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).
Woods County, Compared
Woods County radon figures, compared
Calculated by Radon411CDC's largest figure for Woods 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 1.8 pCi/L, with a middle value of 1.8 pCi/L.
The nearest counties with a figure are Oklahoma County (117 miles away) at 8.9%, Washington County (164 miles away) at 11.3% and Tulsa County (169 miles away) at 6.0%. 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 Woods 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.
Woods County, Geology
The ground under Woods County
PredictedUSGS's geologic map puts all of Woods 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.
Woods County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Woods County's is. Of the 6 counties that border it, 2 have more high-potential ground, Comanche County, KS the most at 31.5%.
The map rates the ground, not the air in any home.
Local help
Woods County, Local resources
Radon testing and mitigation in Woods 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
Woods County, Questions
Questions about radon in Woods County
Are radon levels high in Woods County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Woods County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the 5 nearest counties with a figure, within 227 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Woods County?
Woods County borders 6 counties: Alfalfa County, OK, Major County, OK, Woodward County, OK, Barber County, KS, Comanche County, KS and Harper County, OK.
Products
Woods County, Products
Testing a home in Woods County
No CDC figure names Woods County; the nearest county with one, Oklahoma County (117 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 Woods 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
EcoQube Flex battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 15 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Woods County, Bordering counties
Counties bordering Woods County
Calculated by Radon411- Radon levels in Alfalfa County, OKEPA zone 3
100.0%at or above 4 pCi/L
Median 29.3 pCi/L · 1 test
- Radon levels in Major County, OKEPA zone 3
0.0%at or above 4 pCi/L
Median 2.7 pCi/L · 2 tests
- Radon levels in Woodward County, OKEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Barber County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Comanche County, KSEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Harper County, OKEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Woods County, Cities and towns
Cities and towns in Woods County
About 8,443 people live in Woods County by the Census Bureau's estimate for July 1, 2025, 155 fewer than in 2020 (−1.8%). Spread over its land, that is 6.6 people to the square mile. Alva alone is home to 4,880 of them, 57.8% of the total. Together its 4 incorporated places hold 69.4% of those residents; the other 30.6% live outside any of them. Reported testing is thin here: 1 test over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.
From Alva to Dacoma, CDC publishes no figure by town: each reads Woods County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Alva | 4,880 | −2.4% | 57.8% |
| Waynoka | 698 | −1.7% | 8.3% |
| Freedom | 177 | −1.1% | 2.1% |
| Dacoma | 106 | −2.8% | 1.3% |
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).
Woods County, Homes
Homes in Woods County
Woods County is a place of houses on their own lots: 83% of its 4,463 homes are detached single-family houses, against 73% across Oklahoma. The homes are older than Oklahoma's as a whole: half were built before 1961 (1980 for Oklahoma), and 49% date from before 1960. 64% 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 | Woods County | Oklahoma |
|---|---|---|
| Housing units | 4,463 | 1,763,036 |
| Detached houses | 83% | 73% |
| In buildings of 5 or more | 5% | 12% |
| Mobile homes | 8% | 9% |
| Built before 1960 | 49% | 21% |
| Built since 2000 | 9% | 25% |
| Middle year built | 1961 | 1980 |
| Owner-occupied | 64% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.