Skip to content
RADON411

Locations and reports

Radon Levels in Haskell County, Oklahoma

EPA puts Haskell County in Zone 3, its lowest radon zone, and only 1 radon test from it is 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

How to test this homeFind a certified tester

  • Nearest county

    32.0%

    Cherokee County, 47 miles

    Cherokee
    32.0%
    Oklahoma
    12.6%

    Share at 4+ pCi/L, 50 tests, 2006 to 2015

  • Ground above low

    None

    15.2 pts below Oklahoma

    Haskell
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    1

    Too few for a share

    Haskell
    1
    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 Haskell 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

Haskell County, At a glance

Haskell County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 1 reported test for Haskell County over the 2008 to 2017 laboratory totals, a result of 0.7 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Haskell County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Haskell 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

Haskell County, Compared

Haskell County radon figures, compared

Calculated by Radon411

CDC's largest figure for Haskell County rests on 1 test over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 0.7 pCi/L, with a middle value of 0.7 pCi/L.

The nearest counties with a figure are Cherokee County (47 miles away) at 32.0%, Tulsa County (77 miles away) at 6.0% and Delaware County (83 miles away) at 44.7%. 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 Haskell 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 Haskell 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
Muskogee County, OKborders it156.7%1.3 pCi/L
McIntosh County, OKborders it20.0%1.3 pCi/L
Sequoyah County, OKborders it40.0%1.6 pCi/L
Le Flore County, OKborders it80.0%0.8 pCi/L
The nearest Oklahoma counties to Haskell County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Cherokee County47 mi5032.0%1.9 pCi/L
Tulsa County77 mi3006.0%0.9 pCi/L
Delaware County83 mi3844.7%2.5 pCi/L
Washington County112 mi5311.3%1.9 pCi/L
Oklahoma County131 mi1358.9%0.9 pCi/L
Haskell County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201710.0%0.7 pCi/L0.7 pCi/L12.7%Level
2007 to 201610.0%0.7 pCi/L0.7 pCi/L12.1%Level
2006 to 201510.0%0.7 pCi/L0.7 pCi/L12.6%Level
2005 to 201410.0%0.7 pCi/L0.7 pCi/L12.0%First on file

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

Haskell County, Geology

The ground under Haskell County

Predicted

USGS's geologic map puts all of Haskell County's mapped land in one class: low radon potential. The map puts 83.2% of Haskell County in the area it calls Lower Arkansas River Valley and 16.8% in Central Oklahoma Plains and Hills. USGS gives the first a radon index of 8 and the second 7, both in the low band (5 to 8).

USGS's geologic areas under Haskell County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Lower Arkansas River ValleyPennsylvanian sandstone, siltstone, shale.Low883.2%
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.Low716.8%

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

Haskell County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Haskell County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Muskogee County the most at 2.7%.

Share of land by USGS radon potential: Haskell County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Haskell CountyZone 3100%NoneNone
Latimer CountyZone 3100%NoneNone
Sequoyah CountyZone 297.4%2.6%None
Muskogee CountyZone 397.3%2.7%None
Le Flore CountyZone 3100%NoneNone
McIntosh CountyZone 3100%NoneNone
Pittsburg 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

Haskell County, Local resources

Radon testing and mitigation in Haskell County

What it means

Haskell County, Questions

Questions about radon in Haskell County

Are radon levels high in Haskell County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Haskell County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.7 pCi/L. Of the 5 nearest counties with a figure, within 131 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.

Which counties border Haskell County?

Haskell County borders 6 counties: Latimer County, Sequoyah County, Muskogee County, Le Flore County, McIntosh County and Pittsburg County.

Products

Haskell County, Products

Testing a home in Haskell County

No CDC figure names Haskell County; the nearest county with one, Cherokee County (47 miles away), reported 32.0% 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 Haskell County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Haskell County homes, compared

Explore

Haskell County, Bordering counties

Counties bordering Haskell County

Calculated by Radon411

Haskell County, Cities and towns

Cities and towns in Haskell County

The Census Bureau estimates 11,787 residents in Haskell County for July 1, 2025, 234 more than in 2020 (+2.0%). That works out to 20 people per square mile of land. Its largest town, Stigler, has 2,749 residents, 23.3% of the total. Together its 6 incorporated places hold 36.9% of those residents; the other 63.1% live outside any of them. Reported testing is thin here: 1 test over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.

From Stigler to Tamaha, CDC publishes no figure by town: each reads Haskell County's.

The cities and towns in Haskell County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Stigler2,749+3.0%23.3%
Keota442+1.1%3.7%
Whitefield378+3.0%3.2%
McCurtain358+1.1%3.0%
Kinta279+0.4%2.4%
Tamaha149+1.4%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).

Haskell County, Homes

Homes in Haskell County

Haskell County is a place of houses on their own lots: 77% of its 5,675 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1982, close to Oklahoma's 1980: 18% date from before 1960 and 25% from 2000 or later. Owners live in 77% of the occupied homes (Oklahoma: 66%), so for most households a test and a fix are their own to order.

Homes in Haskell County, Oklahoma, 2019 to 2023
HomesHaskell CountyOklahoma
Housing units5,6751,763,036
Detached houses77%73%
In buildings of 5 or more2%12%
Mobile homes19%9%
Built before 196018%21%
Built since 200025%25%
Middle year built19821980
Owner-occupied77%66%

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