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Radon Levels in Beckham County, Oklahoma

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

  • Nearest county

    8.9%

    Oklahoma County, 130 miles

    Oklahoma
    8.9%
    Oklahoma
    12.6%

    Share at 4+ pCi/L, 135 tests, 2006 to 2015

  • Ground above low

    0.1%

    15.1 pts below Oklahoma

    Beckham
    0.1%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    5

    Too few for a share

    Beckham
    5
    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 Beckham 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

Beckham County, At a glance

Beckham County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 3 reported tests for Beckham County over the 2008 to 2017 laboratory totals, with a median of 1.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Beckham County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Beckham 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

Beckham County, Compared

Beckham County radon figures, compared

Calculated by Radon411

CDC's largest figure for Beckham County rests on 5 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 20.0 points and no rank or comparison is drawn from it. Results reached as high as 2.3 pCi/L, with a middle value of 1.5 pCi/L.

The nearest counties with a figure are Oklahoma County (130 miles away) at 8.9%, Tulsa County (218 miles away) at 6.0% and Washington County (234 miles away) at 11.3%. 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 Beckham 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 Beckham 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
Collingsworth County, TXborders it1100.0%12.6 pCi/L
Custer County, OKborders it20.0%2.3 pCi/L
Wheeler County, TXborders it20.0%3.0 pCi/L
Roger Mills County, OKborders it10.0%3.2 pCi/L
Washita County, OKborders it30.0%2.8 pCi/L
The nearest Oklahoma counties to Beckham County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County130 mi1358.9%0.9 pCi/L
Tulsa County218 mi3006.0%0.9 pCi/L
Washington County234 mi5311.3%1.9 pCi/L
Cherokee County267 mi5032.0%1.9 pCi/L
Delaware County285 mi3844.7%2.5 pCi/L
Beckham County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201730.0%1.8 pCi/L2.3 pCi/L12.7%Level
2007 to 201630.0%1.8 pCi/L2.3 pCi/L12.1%Level
2006 to 201550.0%1.5 pCi/L2.3 pCi/L12.6%Level
2005 to 201450.0%1.5 pCi/L2.3 pCi/L12.0%First on file

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

Beckham County, Geology

The ground under Beckham County

Predicted

Most of the ground under Beckham County is one class on USGS's geologic map: 99.9% of its land is low radon potential, with 0.1% moderate. 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 Beckham 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.Low799.9%

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

Beckham County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Beckham County's is. Of the 8 counties that border it, 3 have more moderate-potential ground, Wheeler County, TX the most at 47.4%.

Share of land by USGS radon potential: Beckham County, the 8 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Beckham CountyZone 399.9%0.1%None
Roger Mills CountyZone 365.8%34.2%None
Greer CountyZone 3100%NoneNone
Wheeler County, TXZone 352.6%47.4%None
Harmon CountyZone 3100%NoneNone
Washita CountyZone 3100%NoneNone
Collingsworth County, TXZone 398.7%1.3%None
Custer CountyZone 3100%NoneNone
Kiowa 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

Beckham County, Questions

Questions about radon in Beckham County

Are radon levels high in Beckham County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Beckham County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the 5 nearest counties with a figure, within 285 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.

Which counties border Beckham County?

Beckham County borders 8 counties: Roger Mills County, OK, Greer County, OK, Wheeler County, TX, Harmon County, OK, Washita County, OK, Collingsworth County, TX, Custer County, OK and Kiowa County, OK.

Products

Beckham County, Products

Testing a home in Beckham County

No CDC figure names Beckham County; the nearest county with one, Oklahoma County (130 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 Beckham County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Beckham County homes, compared

Explore

Beckham County, Bordering counties

Counties bordering Beckham County

Calculated by Radon411

Beckham County, Cities and towns

Cities and towns in Beckham County

About 22,159 people live in Beckham County by the Census Bureau's estimate for July 1, 2025, 167 fewer than in 2020 (−0.7%). That works out to 25 people per square mile of land. Elk City alone is home to 11,335 of them, 51.2% of the total. CDC's 5 reported tests for 2006 to 2015 work out to 0.2 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Elk City to Texola, CDC publishes no figure by town: each reads Beckham County's.

The cities and towns in Beckham County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Elk City11,335−1.5%51.2%
Sayre4,783−0.3%21.6%
Erick979−0.8%4.4%
Carter182−0.5%0.8%
Sweetwaterextends beyond Beckham County105+1.9%Counted whole
Texola41−2.4%0.2%

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 Beckham County is counted whole, so it has no share.

Beckham County, Homes

Homes in Beckham County

Of Beckham County's 10,120 homes, 69% are detached houses, against 73% across Oklahoma; 14% are mobile homes. Half of its homes were built before 1981, close to Oklahoma's 1980: 23% date from before 1960 and 28% from 2000 or later. 66% 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 Beckham County, Oklahoma, 2019 to 2023
HomesBeckham CountyOklahoma
Housing units10,1201,763,036
Detached houses69%73%
In buildings of 5 or more10%12%
Mobile homes14%9%
Built before 196023%21%
Built since 200028%25%
Middle year built19811980
Owner-occupied66%66%

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