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Radon Levels in Jackson County, Oklahoma

EPA puts Jackson County in Zone 3, its lowest radon zone, and only 5 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

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  • Nearest county

    8.9%

    Oklahoma County, 132 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

    Jackson
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    5

    Too few for a share

    Jackson
    5
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Jackson County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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.

Interpret this readingWhat a fix costs

The data

Jackson County, At a glance

Jackson County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Jackson County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

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 Jackson County, 2008 to 2017, laboratory

CDC holds 5 reported tests for Jackson 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). Jackson County beside the counties around it is how this page reads it.

What these figures count

Only 5 tests were reported to CDC for Jackson 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).

How to read these figures

Jackson County, Compared

Jackson County radon figures, compared

Calculated by Radon411

CDC's largest figure for Jackson County rests on 5 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 20.0 points and no rank or comparison is drawn from it. Results reached as high as 0.8 pCi/L, with a middle value of 0.6 pCi/L.

The nearest counties with a figure are Oklahoma County (132 miles away) at 8.9%, Tulsa County (223 miles away) at 6.0% and Washington County (246 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 Jackson 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.

Oklahoma, the United States and the counties around Jackson County, 2006 to 2015, laboratory
AreaTestsAt or above 4 pCi/LMedian
Oklahoma, pooled53 counties, pooled86012.6%Not pooled
United States, pooled2,669 counties, pooled1,805,52836.3%Not pooled
Delaware Countyhighest in the state3844.7%2.5 pCi/L
Tulsa Countylowest in the state3006.0%0.9 pCi/L
The nearest Oklahoma counties to Jackson County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County132 mi1358.9%0.9 pCi/L
Tulsa County223 mi3006.0%0.9 pCi/L
Washington County246 mi5311.3%1.9 pCi/L
Cherokee County266 mi5032.0%1.9 pCi/L
Delaware County289 mi3844.7%2.5 pCi/L
Jackson County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201750.0%0.6 pCi/L0.8 pCi/L12.7%Level
2007 to 201630.0%0.1 pCi/L0.8 pCi/L12.1%Level
2006 to 201530.0%0.1 pCi/L0.8 pCi/L12.6%Level
2005 to 201430.0%0.1 pCi/L0.8 pCi/L12.0%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Jackson County, Geology

The ground under Jackson County

Predicted

USGS's geologic map puts all of Jackson County's mapped land in one class: low radon potential. The map puts 93.4% of Jackson County in the area it calls Central Oklahoma Plains and Hills and 6.4% in Wichita Mountains. USGS gives the first a radon index of 7 and the second 6, both in the low band (5 to 8).

USGS's geologic areas under Jackson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Oklahoma Plains and HillsNonmarine Permian and Tertiary rocks, including shale, sandstone, and conglomerate in the western part, and Mississippian and Pennsylvanian rocks in the eastern part.Low793.4%
Wichita MountainsGranite, rhyolite, abd gabbro.Low66.4%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Jackson County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Jackson County's is. None of the 6 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Jackson County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Jackson CountyZone 3100%NoneNone
Greer CountyZone 3100%NoneNone
Hardeman County, TXZone 3100%NoneNone
Tillman CountyZone 3100%NoneNone
Harmon CountyZone 3100%NoneNone
Kiowa CountyZone 3100%NoneNone
Wilbarger County, TXZone 3100%NoneNone
Oklahoma77 counties, pooled by land areaVaries84.8%14.6%0.6%

The map rates the ground, not the air in any home.

Local help

Jackson County, Local resources

Radon testing and mitigation in Jackson County

What it means

Jackson County, Questions

Questions about radon in Jackson County

Are radon levels high in Jackson County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Jackson 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 289 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.

Which counties border Jackson County?

Jackson County borders 6 counties: Greer County, OK, Hardeman County, TX, Tillman County, OK, Harmon County, OK, Kiowa County, OK and Wilbarger County, TX.

Products

Jackson County, Products

Testing a home in Jackson County

No CDC figure names Jackson County; the nearest county with one, Oklahoma County (132 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 Jackson County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Jackson County homes, compared

Explore

Jackson County, Bordering counties

Counties bordering Jackson County

Calculated by Radon411

Jackson County, Cities and towns

Cities and towns in Jackson County

Jackson County's population has barely moved since 2020: 24,764 residents on July 1, 2025 against 24,735 then, by the Census Bureau's estimates. That works out to 31 people per square mile of land. Altus alone is home to 18,707 of them, 75.5% of the total. Together its 9 incorporated places hold 84.5% of those residents; the other 15.5% live outside any of them. CDC's 5 reported tests for 2008 to 2017 work out to 0.2 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Altus to Friendship, CDC publishes no figure by town: each reads Jackson County's.

The cities and towns in Jackson County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Altus18,707Level75.5%
Blair711−0.4%2.9%
Olustee466+0.2%1.9%
East Duke399+1.8%1.6%
Eldorado318−0.3%1.3%
Martha166+0.6%0.7%
Headrick73−1.4%0.3%
Elmer64+1.6%0.3%
Friendship24LevelUnder 0.1%

9 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).

Jackson County, Homes

Homes in Jackson County

Jackson County is a place of houses on their own lots: 80% of its 12,046 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1973, close to Oklahoma's 1980: 29% date from before 1960 and 12% from 2000 or later. 61% 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 in Jackson County, Oklahoma, 2019 to 2023
HomesJackson CountyOklahoma
Housing units12,0461,763,036
Detached houses80%73%
In buildings of 5 or more9%12%
Mobile homes4%9%
Built before 196029%21%
Built since 200012%25%
Middle year built19731980
Owner-occupied61%66%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.