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Radon Levels in Tulsa County, Oklahoma

EPA puts Tulsa County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 8.2% of 306 (2008 to 2017, laboratory totals) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    8.2%

    4.5 pts below OK

    Tulsa
    8.2%
    Oklahoma
    12.7%

    306 tests, 2008 to 2017

  • Median result

    0.9pCi/L

    Below action level

    Tulsa
    0.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    306

    Most tested in Oklahoma

    Tulsa
    306

    Reported to CDC before any fix, 2008 to 2017

  • 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

  • Rank in Oklahoma

    4 of 4

    Lowest quarter

    Tulsa
    8.2%
    Delaware
    41.9%

    By share, of 4 with 30+ tests

Read a result for Tulsa County

Starts at Tulsa County's median, 0.9 pCi/L

0.9pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 0.9 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Tulsa County's median reported result, 2008 to 2017.

Interpret this reading

The data

Tulsa County, At a glance

Tulsa County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Tulsa 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 Tulsa County, 2008 to 2017, laboratory

Reported results by concentration band, Tulsa County, 2008 to 2017, laboratory
Under 2 pCi/L: 73%2 to 4 pCi/L: 19%4 pCi/L and above: 8%

Of 306 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Tulsa County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L22473.2%
2 to 4 pCi/L5718.6%
4 pCi/L and above258.2%
What these figures count

These are the 306 tests reported to CDC for Tulsa County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not 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

Tulsa County, Compared

Tulsa County radon figures, compared

Calculated by Radon411

Tulsa County reports fewer high tests than Oklahoma overall. 8.2% of its 306 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 4.5 points below the 12.7% pooled from 52 Oklahoma counties.

Ordered from highest share down, it comes 4th of 4 Oklahoma counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Tulsa County sits 27.5 points below it.

Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 8.2% share point the same way here.

Half the tests came in under 0.9 pCi/L and half over it; the single highest reached 19.0 pCi/L. The rest split 73.2% under 2 pCi/L and 18.6% from 2 to 4 (Oklahoma: 68.7% and 18.7%).

CDC's ten-year totals for Tulsa County went from 258 tests (2005 to 2014) to 306 (2008 to 2017), the share going from 3.9% to 8.2%.

Tulsa County against Oklahoma, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Tulsa County
Tulsa County3068.2%0.9 pCi/LThis county
Oklahoma, pooled52 counties, pooled81412.7%Not pooled+4.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+27.5 points
Delaware Countyhighest in the state3141.9%2.3 pCi/L+33.7 points
Oklahoma Countylowest in the state1198.4%0.8 pCi/L+0.2 points
Rogers County, OKborders it2714.8%0.8 pCi/L+6.6 points
Washington County, OKborders it234.3%1.6 pCi/L−3.9 points
Creek County, OKborders it100.0%0.8 pCi/L−8.2 points
Wagoner County, OKborders it100.0%1.1 pCi/L−8.2 points
Okmulgee County, OKborders it10.0%2.1 pCi/L−8.2 points
Osage County, OKborders it30.0%0.9 pCi/L−8.2 points
Where Tulsa County's reported results fell, 2008 to 2017, laboratory, beside Oklahoma and the United States
ResultTulsa County testsTulsa County shareOklahoma shareU.S. shareAgainst Oklahoma
Under 2 pCi/L22473.2%68.7%39.6%+4.5 points
2 to 4 pCi/L5718.6%18.7%24.7%−0.1 points
4 pCi/L and above258.2%12.7%35.7%−4.5 points
Tulsa County ranked among the 4 Oklahoma counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Delaware County1 of 43141.9%2.3 pCi/L
Cherokee County2 of 45131.4%1.9 pCi/L
Oklahoma County3 of 41198.4%0.8 pCi/L
Tulsa County4 of 43068.2%0.9 pCi/L
Tulsa County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 20173068.2%0.9 pCi/L19.0 pCi/L12.7%+1.4 points
2007 to 20163076.8%0.9 pCi/L19.0 pCi/L12.1%+0.8 points
2006 to 20153006.0%0.9 pCi/L19.0 pCi/L12.6%+2.1 points
2005 to 20142583.9%0.9 pCi/L19.0 pCi/L12.0%First on file

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

Tulsa County, Geology

The ground under Tulsa County

Predicted

USGS's geologic map puts all of Tulsa 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).

USGS's geologic areas under Tulsa 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.Low7100%

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

Tulsa County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Tulsa County's is. Of the 7 counties that border it, 1 has more moderate-potential ground, Wagoner County the most at 0.4%.

Share of land by USGS radon potential: Tulsa County, the 7 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Tulsa CountyZone 3100%NoneNone
Creek CountyZone 3100%NoneNone
Rogers CountyZone 3100%NoneNone
Wagoner CountyZone 399.6%0.4%None
Okmulgee CountyZone 3100%NoneNone
Osage CountyZone 3100%NoneNone
Pawnee CountyZone 3100%NoneNone
Washington CountyZone 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

Tulsa County, Local resources

Radon testing and mitigation in Tulsa County

What it means

Tulsa County, Questions

Questions about radon in Tulsa County

Are radon levels high in Tulsa County?

Over the 2008 to 2017 laboratory totals, 8.2% of the radon tests reported to CDC for Tulsa County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.9 pCi/L. Of 4 Oklahoma counties with 30 or more tests for the same period, 3 reported a higher share; pooled, the state comes to 12.7%.

Which counties border Tulsa County?

Tulsa County borders 7 counties: Creek County, Rogers County, Wagoner County, Okmulgee County, Osage County, Pawnee County and Washington County.

Products

Tulsa County, Products

Testing a home in Tulsa County

In Tulsa County, 8.2% of 306 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 12.7% pooled across Oklahoma. 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 Tulsa County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Tulsa County homes, compared

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Tulsa County, Bordering counties

Counties bordering Tulsa County

Calculated by Radon411

Tulsa County, Cities and towns

Cities and towns in Tulsa County

The Census Bureau estimates 698,782 residents in Tulsa County for July 1, 2025, 28,101 more than in 2020 (+4.2%). Packed into its land, that is 1,225 people per square mile. Tulsa, the largest place on its list (416,209 residents in all), extends beyond Tulsa County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 306 reported tests for 2008 to 2017 come to 0.4 for every 1,000 residents (2025 estimate), against 0.2 for Oklahoma.

From Tulsa to Lotsee, CDC publishes no figure by town: each reads Tulsa County's.

The 12 largest cities and towns in Tulsa County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Tulsaextends beyond Tulsa County416,209+0.6%Counted whole
Broken Arrowextends beyond Tulsa County124,991+9.7%Counted whole
Owassoextends beyond Tulsa County43,117+12.4%Counted whole
Bixbyextends beyond Tulsa County32,766+13.6%Counted whole
Jenks28,175+7.9%4.0%
Sapulpaextends beyond Tulsa County23,695+8.1%Counted whole
Sand Springsextends beyond Tulsa County20,397+2.3%Counted whole
Glenpool14,705+7.3%2.1%
Collinsvilleextends beyond Tulsa County9,956+24.3%Counted whole
Skiatookextends beyond Tulsa County8,960+5.4%Counted whole
Mannfordextends beyond Tulsa County3,432+5.5%Counted whole
Sperryextends beyond Tulsa County1,241+4.8%Counted whole
  • Liberty (part)
  • Lotsee

14 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Tulsa County is counted whole, so it has no share.

Tulsa County, Homes

Homes in Tulsa County

Of Tulsa County's 295,318 homes, 69% are detached houses, against 73% across Oklahoma; 21% are in buildings of five or more homes. Half of its homes were built before 1979, close to Oklahoma's 1980: 23% date from before 1960 and 23% from 2000 or later. 60% 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 Tulsa County, Oklahoma, 2019 to 2023
HomesTulsa CountyOklahoma
Housing units295,3181,763,036
Detached houses69%73%
In buildings of 5 or more21%12%
Mobile homes2%9%
Built before 196023%21%
Built since 200023%25%
Middle year built19791980
Owner-occupied60%66%

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