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Radon Levels in Craig County, Oklahoma

EPA puts Craig 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

    44.7%

    Delaware County

    Delaware
    44.7%

    1 of 7 neighbours have 30+ tests, 2006 to 2015

  • Nearest county

    44.7%

    Delaware County, 33 miles

    Delaware
    44.7%
    Oklahoma
    12.6%

    Share at 4+ pCi/L, 38 tests, 2006 to 2015

  • Ground above low

    5.9%

    9.3 pts below Oklahoma

    Craig
    5.9%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Craig
    3
    Needed
    30

    2006 to 2015, 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 Craig 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

Craig County, At a glance

Craig County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Craig 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 94% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Craig County, 2008 to 2017, laboratory

CDC holds 2 reported tests for Craig County over the 2008 to 2017 laboratory totals, with a median of 2.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Craig County beside the counties around it is how this page reads it.

What these figures count

Only 2 tests were reported to CDC for Craig 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

Craig County, Compared

Craig County radon figures, compared

Calculated by Radon411

CDC's largest figure for Craig County rests on 3 tests over the 2006 to 2015 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 5.7 pCi/L, with a middle value of 3.7 pCi/L.

Delaware County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 44.7% of its tests at or above 4 pCi/L. Farther out, Washington County (39 miles away) at 11.3%, Cherokee County (60 miles away) at 32.0% and Tulsa County (60 miles away) at 6.0% 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 Craig County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 94% of the county's land low radon potential.

Oklahoma, the United States and the counties around Craig 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
Cherokee Countyhighest in the state5032.0%1.9 pCi/L
Tulsa Countylowest in the state3006.0%0.9 pCi/L
Delaware County, OKborders it3844.7%2.5 pCi/L
Mayes County, OKborders it714.3%1.2 pCi/L
Rogers County, OKborders it1711.8%0.6 pCi/L
Nowata County, OKborders it10.0%0.2 pCi/L
Ottawa County, OKborders it30.0%0.2 pCi/L
The nearest Oklahoma counties to Craig County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Delaware County33 mi3844.7%2.5 pCi/L
Washington County39 mi5311.3%1.9 pCi/L
Cherokee County60 mi5032.0%1.9 pCi/L
Tulsa County60 mi3006.0%0.9 pCi/L
Oklahoma County149 mi1358.9%0.9 pCi/L
Craig 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%2.6 pCi/L3.7 pCi/L12.7%Level
2007 to 201620.0%2.6 pCi/L3.7 pCi/L12.1%−33.3 points
2006 to 2015333.3%3.7 pCi/L5.7 pCi/L12.6%Level
2005 to 2014333.3%3.7 pCi/L5.7 pCi/L12.0%First on file

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

Craig County, Geology

The ground under Craig County

Predicted

Most of the ground under Craig County is one class on USGS's geologic map: 94.1% of its land is low radon potential, with 5.9% moderate. The map puts 94.1% of Craig County in the area it calls Central Oklahoma Plains and Hills and 5.9% in Ozark Plateau. USGS gives the first a radon index of 7, in the low band (5 to 8), and the second 9, in the moderate band (9 to 11).

USGS's geologic areas under Craig 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.Low794.1%
Ozark PlateauMississippian and Pennsylvanian limestone and shale.Moderate95.9%

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

Craig County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Craig County's is. Of the 7 counties that border it, 5 have more moderate-potential ground, Delaware County the most at 99.9%.

Share of land by USGS radon potential: Craig County, the 7 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Craig CountyZone 394.1%5.9%None
Nowata CountyZone 3100%NoneNone
Ottawa CountyZone 352.0%48.0%None
Labette County, KSZone 20.2%99.8%None
Mayes CountyZone 258.8%41.2%None
Cherokee County, KSZone 20.1%99.8%None
Delaware CountyZone 20.1%99.9%None
Rogers 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

Craig County, Questions

Questions about radon in Craig County

Are radon levels high in Craig County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Craig County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.6 pCi/L. Delaware County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 44.7% of its tests at or above 4 pCi/L.

Which counties border Craig County?

Craig County borders 7 counties: Nowata County, OK, Ottawa County, OK, Labette County, KS, Mayes County, OK, Cherokee County, KS, Delaware County, OK and Rogers County, OK.

Products

Craig County, Products

Testing a home in Craig County

No CDC figure names Craig County; the nearest county with one, Delaware County (33 miles away), reported 44.7% 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 Craig County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Craig County homes, compared

Explore

Craig County, Bordering counties

Counties bordering Craig County

Calculated by Radon411

Craig County, Cities and towns

Cities and towns in Craig County

The Census Bureau estimates 14,518 residents in Craig County for July 1, 2025, 371 more than in 2020 (+2.6%). That works out to 19 people per square mile of land. Its largest town, Vinita, has 5,424 residents, 37.4% of the total. CDC's 3 reported tests for 2006 to 2015 work out to 0.2 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Vinita to Big Cabin, CDC publishes no figure by town: each reads Craig County's.

The cities and towns in Craig County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Vinita5,424+2.5%37.4%
Langleyextends beyond Craig County646+3.4%Counted whole
Welch640+2.1%4.4%
Ketchumextends beyond Craig County514+2.6%Counted whole
Bluejacket244+2.1%1.7%
Big Cabin185+3.9%1.3%

6 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 Craig County is counted whole, so it has no share.

Craig County, Homes

Homes in Craig County

Of Craig County's 6,382 homes, 75% are detached houses, against 73% across Oklahoma; 16% are mobile homes. Half of its homes were built before 1975, close to Oklahoma's 1980: 31% date from before 1960 and 17% from 2000 or later. 73% 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 Craig County, Oklahoma, 2019 to 2023
HomesCraig CountyOklahoma
Housing units6,3821,763,036
Detached houses75%73%
In buildings of 5 or more5%12%
Mobile homes16%9%
Built before 196031%21%
Built since 200017%25%
Middle year built19751980
Owner-occupied73%66%

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