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Radon Levels in Kingfisher County, Oklahoma

EPA puts Kingfisher County in Zone 3, its lowest radon zone, and only 2 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

    8.9%

    Oklahoma County

    Oklahoma
    8.9%

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

  • Nearest county

    8.9%

    Oklahoma County, 41 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

    Kingfisher
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Kingfisher
    2
    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 Kingfisher 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

Kingfisher County, At a glance

Kingfisher County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 2 reported tests for Kingfisher County over the 2008 to 2017 laboratory totals, with a median of 1.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Kingfisher County beside the counties around it is how this page reads it.

What these figures count

Only 2 tests were reported to CDC for Kingfisher 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

Kingfisher County, Compared

Kingfisher County radon figures, compared

Calculated by Radon411

CDC's largest figure for Kingfisher County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 1.8 pCi/L, with a middle value of 1.2 pCi/L.

Oklahoma County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 8.9% of its tests at or above 4 pCi/L. Farther out, Tulsa County (113 miles away) at 6.0%, Washington County (125 miles away) at 11.3% and Cherokee County (165 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 Kingfisher 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 Kingfisher 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
Canadian County, OKborders it2119.0%0.6 pCi/L
Oklahoma County, OKborders it1358.9%0.9 pCi/L
Garfield County, OKborders it70.0%2.0 pCi/L
Logan County, OKborders it60.0%0.9 pCi/L
Major County, OKborders it20.0%2.7 pCi/L
The nearest Oklahoma counties to Kingfisher County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County41 mi1358.9%0.9 pCi/L
Tulsa County113 mi3006.0%0.9 pCi/L
Washington County125 mi5311.3%1.9 pCi/L
Cherokee County165 mi5032.0%1.9 pCi/L
Delaware County178 mi3844.7%2.5 pCi/L
Kingfisher County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201720.0%1.2 pCi/L1.8 pCi/L12.7%Level
2007 to 201620.0%1.2 pCi/L1.8 pCi/L12.1%Level
2006 to 201510.0%0.6 pCi/L0.6 pCi/L12.6%Level
2005 to 201410.0%0.6 pCi/L0.6 pCi/L12.0%First on file

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

Kingfisher County, Geology

The ground under Kingfisher County

Predicted

USGS's geologic map puts all of Kingfisher 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 Kingfisher 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.

Kingfisher County beside the ground around it

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

Share of land by USGS radon potential: Kingfisher County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Kingfisher CountyZone 3100%NoneNone
Garfield CountyZone 3100%NoneNone
Logan CountyZone 3100%NoneNone
Blaine CountyZone 3100%NoneNone
Canadian CountyZone 3100%NoneNone
Major CountyZone 3100%NoneNone
Oklahoma 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

Kingfisher County, Questions

Questions about radon in Kingfisher County

Are radon levels high in Kingfisher County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Kingfisher County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Oklahoma County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 8.9% of its tests at or above 4 pCi/L.

Which counties border Kingfisher County?

Kingfisher County borders 6 counties: Garfield County, Logan County, Blaine County, Canadian County, Major County and Oklahoma County.

Products

Kingfisher County, Products

Testing a home in Kingfisher County

No CDC figure names Kingfisher County; the nearest county with one, Oklahoma County (41 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 Kingfisher County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Kingfisher County homes, compared

Explore

Kingfisher County, Bordering counties

Counties bordering Kingfisher County

Calculated by Radon411

Kingfisher County, Cities and towns

Cities and towns in Kingfisher County

The Census Bureau estimates 15,795 residents in Kingfisher County for July 1, 2025, 625 more than in 2020 (+4.1%). That works out to 18 people per square mile of land. Piedmont, the largest place on its list (9,427 residents in all), extends beyond Kingfisher County, so no share of the total is worked out for it. Reported testing is thin here: 2 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.

From Piedmont to Loyal, CDC publishes no figure by town: each reads Kingfisher County's.

The cities and towns in Kingfisher County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Piedmontextends beyond Kingfisher County9,427+25.9%Counted whole
Kingfisher5,201+5.7%32.9%
Hennessey2,207+3.1%14.0%
Okarcheextends beyond Kingfisher County1,196+4.9%Counted whole
Cashionextends beyond Kingfisher County971+12.9%Counted whole
Dover410+2.5%2.6%
Loyal70+2.9%0.4%

7 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 Kingfisher County is counted whole, so it has no share.

Kingfisher County, Homes

Homes in Kingfisher County

Of Kingfisher County's 6,426 homes, 75% are detached houses, against 73% across Oklahoma; 17% are mobile homes. Half of its homes were built before 1977, close to Oklahoma's 1980: 27% date from before 1960 and 24% from 2000 or later. 72% 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 Kingfisher County, Oklahoma, 2019 to 2023
HomesKingfisher CountyOklahoma
Housing units6,4261,763,036
Detached houses75%73%
In buildings of 5 or more4%12%
Mobile homes17%9%
Built before 196027%21%
Built since 200024%25%
Middle year built19771980
Owner-occupied72%66%

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