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Radon Levels in Creek County, Oklahoma

EPA puts Creek 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

  • Highest bordering

    6.0%

    Tulsa County

    Tulsa
    6.0%

    1 of 6 neighbours have 30+ tests, 2006 to 2015

  • Nearest county

    6.0%

    Tulsa County, 28 miles

    Tulsa
    6.0%
    Oklahoma
    12.6%

    Share at 4+ pCi/L, 300 tests, 2006 to 2015

  • Ground above low

    None

    15.2 pts below Oklahoma

    Creek
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    10

    Too few for a share

    Creek
    10
    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 Creek 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.

The data

Creek County, At a glance

Creek County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 10 reported tests for Creek County over the 2008 to 2017 laboratory totals, with a median of 0.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Creek County beside the counties around it is how this page reads it.

What these figures count

Only 10 tests were reported to CDC for Creek 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

Creek County, Compared

Creek County radon figures, compared

Calculated by Radon411

CDC's largest figure for Creek County rests on 10 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 2.5 pCi/L, with a middle value of 0.8 pCi/L.

Tulsa County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L. Farther out, Washington County (62 miles away) at 11.3%, Oklahoma County (63 miles away) at 8.9% and Cherokee County (77 miles away) at 32.0% have figures too. 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 Creek 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 Creek 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
Oklahoma Countylowest in the state1358.9%0.9 pCi/L
Payne County, OKborders it166.3%0.8 pCi/L
Tulsa County, OKborders it3006.0%0.9 pCi/L
Okmulgee County, OKborders it30.0%0.8 pCi/L
Lincoln County, OKborders it50.0%1.1 pCi/L
The nearest Oklahoma counties to Creek County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tulsa County28 mi3006.0%0.9 pCi/L
Washington County62 mi5311.3%1.9 pCi/L
Oklahoma County63 mi1358.9%0.9 pCi/L
Cherokee County77 mi5032.0%1.9 pCi/L
Delaware County94 mi3844.7%2.5 pCi/L
Creek County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 2017100.0%0.8 pCi/L2.5 pCi/L12.7%Level
2007 to 201690.0%0.8 pCi/L2.5 pCi/L12.1%Level
2006 to 201590.0%0.8 pCi/L2.5 pCi/L12.6%Level
2005 to 2014100.0%1.0 pCi/L2.5 pCi/L12.0%First on file

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

Creek County, Geology

The ground under Creek County

Predicted

USGS's geologic map puts all of Creek 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 Creek 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.

Creek County beside the ground around it

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

Share of land by USGS radon potential: Creek County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Creek CountyZone 3100%NoneNone
Tulsa CountyZone 3100%NoneNone
Okmulgee CountyZone 3100%NoneNone
Okfuskee CountyZone 3100%NoneNone
Lincoln CountyZone 3100%NoneNone
Payne CountyZone 3100%NoneNone
Pawnee 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.

What it means

Creek County, Questions

Questions about radon in Creek County

Are radon levels high in Creek County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Creek County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.8 pCi/L. Tulsa County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L.

Which counties border Creek County?

Creek County borders 6 counties: Tulsa County, Okmulgee County, Okfuskee County, Lincoln County, Payne County and Pawnee County.

Products

Creek County, Products

Testing a home in Creek County

No CDC figure names Creek County; the nearest county with one, Tulsa County (28 miles away), reported 6.0% 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 Creek County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Creek County homes, compared

Explore

Creek County, Bordering counties

Counties bordering Creek County

Calculated by Radon411

Creek County, Cities and towns

Cities and towns in Creek County

The Census Bureau estimates 74,967 residents in Creek County for July 1, 2025, 3,124 more than in 2020 (+4.3%). That works out to 79 people per square mile of land. Sapulpa, the largest place on its list (23,695 residents in all), extends beyond Creek County, so no share of the total is worked out for it. CDC's 10 reported tests for 2008 to 2017 work out to 0.1 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Sapulpa to Lawrence Creek, CDC publishes no figure by town: each reads Creek County's.

The cities and towns in Creek County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Sapulpaextends beyond Creek County23,695+8.1%Counted whole
Bristow4,381+3.0%5.8%
Mannfordextends beyond Creek County3,432+5.5%Counted whole
Stroudextends beyond Creek County2,913+6.5%Counted whole
Drumrightextends beyond Creek County2,546−0.4%Counted whole
Kiefer2,310+6.1%3.1%
Kellyville1,052+2.6%1.4%
Moundsextends beyond Creek County999+7.3%Counted whole
Oilton904+2.1%1.2%
Depew412+2.2%0.5%
Slick151+7.1%0.2%
Lawrence Creek128+4.9%0.2%

12 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 Creek County is counted whole, so it has no share.

Creek County, Homes

Homes in Creek County

Of Creek County's 31,387 homes, 72% are detached houses, against 73% across Oklahoma; 19% are mobile homes. Half of its homes were built before 1984, close to Oklahoma's 1980: 16% date from before 1960 and 28% from 2000 or later. 74% 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 Creek County, Oklahoma, 2019 to 2023
HomesCreek CountyOklahoma
Housing units31,3871,763,036
Detached houses72%73%
In buildings of 5 or more4%12%
Mobile homes19%9%
Built before 196016%21%
Built since 200028%25%
Middle year built19841980
Owner-occupied74%66%

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