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Radon Levels in Cleburne County, Alabama

EPA puts Cleburne County in Zone 1, its highest radon zone, and 18.8% of its 69 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    18.8%

    3.1 pts below AL

    Cleburne
    18.8%
    Alabama
    21.9%

    69 tests, 2008 to 2017

  • Median result

    1.5pCi/L

    Below action level

    Cleburne
    1.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    69

    19th of 27 by tests

    Cleburne
    69
    Madison
    5,178

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Alabama

    7 of 27

    Top quarter

    Cleburne
    18.8%
    Colbert
    36.2%

    By share, of 27 with 30+ tests

Read a result for Cleburne County

Starts at Cleburne County's median, 1.5 pCi/L

1.5pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 1.5 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Cleburne County's median reported result, 2008 to 2017.

Interpret this reading

The data

Cleburne County, At a glance

Cleburne County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Cleburne County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

USGS geologic potential: High across 88% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Cleburne County, 2008 to 2017, laboratory
Under 2 pCi/L: 56%2 to 4 pCi/L: 25%4 pCi/L and above: 19%

Of 69 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Cleburne County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3956.5%
2 to 4 pCi/L1724.6%
4 pCi/L and above1318.8%
What these figures count

These are the 69 tests reported to CDC for Cleburne County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not 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

Cleburne County, Compared

Cleburne County radon figures, compared

Calculated by Radon411

Cleburne County's 69 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.5 pCi/L and a maximum of 14.1 pCi/L, and 18.8% reached 4 pCi/L. Alabama as a whole (65 Alabama counties, pooled) comes to 21.9%: 3.1 points higher than here.

Among its state's counties it ranks 7th of 27 Alabama counties with 30 or more tests for the same period. Statewide for the same period, Colbert County reported the highest share (36.2%) and Baldwin County the lowest (0.0%).

Below the action level, 39 tests (56.5%) came in under 2 pCi/L, against 54.3% statewide, and 17 tests (24.6%) fell between 2 and 4, against 23.8% statewide. CDC's ten-year totals for Cleburne County went from 112 tests (2005 to 2014) to 69 (2008 to 2017), the share going from 20.5% to 18.8%.

EPA's 1993 zone map puts Cleburne County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 88% of the county's land high radon potential.

Next door, the shares run from 17.9% in Clay County to 40.5% in Carroll County, GA, with Talladega County and Clay County below Cleburne County.

Cleburne County against Alabama, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Cleburne County
Cleburne County6918.8%1.5 pCi/LThis county
Alabama, pooled65 counties, pooled12,56921.9%Not pooled+3.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+16.9 points
Colbert Countyhighest in the state87136.2%2.7 pCi/L+17.4 points
Baldwin Countylowest in the state310.0%1.0 pCi/L−18.8 points
Polk County, GAborders it2157.1%4.9 pCi/L+38.3 points
Carroll County, GAborders it19040.5%3.4 pCi/L+21.7 points
Randolph County, ALborders it1540.0%3.7 pCi/L+21.2 points
Haralson County, GAborders it2231.8%2.1 pCi/L+13.0 points
Calhoun County, ALborders it23818.9%1.4 pCi/L+0.1 points
Talladega County, ALborders it12418.5%1.6 pCi/L−0.3 points
Clay County, ALborders it3917.9%0.9 pCi/L−0.9 points
Cherokee County, ALborders it1010.0%1.5 pCi/L−8.8 points
Where Cleburne County's reported results fell, 2008 to 2017, laboratory, beside Alabama and the United States
ResultCleburne County testsCleburne County shareAlabama shareU.S. shareAgainst Alabama
Under 2 pCi/L3956.5%54.3%39.6%+2.2 points
2 to 4 pCi/L1724.6%23.8%24.7%+0.8 points
4 pCi/L and above1318.8%21.9%35.7%−3.1 points
Cleburne County ranked among the 27 Alabama counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Lauderdale County2 of 271,88527.2%2.2 pCi/L
Madison County3 of 275,17825.2%1.9 pCi/L
Elmore County4 of 273622.2%1.2 pCi/L
Etowah County5 of 275619.6%1.4 pCi/L
Calhoun County6 of 2723818.9%1.4 pCi/L
Cleburne County7 of 276918.8%1.5 pCi/L
Talladega County8 of 2712418.5%1.6 pCi/L
Franklin County9 of 2719318.1%1.4 pCi/L
Clay County10 of 273917.9%0.9 pCi/L
Jackson County11 of 2722317.5%1.5 pCi/L
Autauga County12 of 273517.1%0.9 pCi/L
Cleburne County ten-year laboratory totals, against Alabama's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestAlabama, pooledChange from the row before
2008 to 20176918.8%1.5 pCi/L14.1 pCi/L21.9%+1.1 points
2007 to 20169617.7%1.6 pCi/L14.1 pCi/L22.0%−1.7 points
2006 to 201510819.4%1.6 pCi/L14.1 pCi/L22.0%−1.1 points
2005 to 201411220.5%1.8 pCi/L11.0 pCi/L22.4%First on file

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

Cleburne County, Geology

The ground under Cleburne County

Predicted

Most of the ground under Cleburne County is one class on USGS's geologic map: 88.1% of its land is high radon potential, with 11.9% moderate. The map puts 88.1% of Cleburne County in the area it calls Northern Piedmont and 11.9% in Northern Piedmont. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 9, in the moderate band (9 to 11).

USGS's geologic areas under Cleburne County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Northern PiedmontSchist, metagraywake, phyllite, quartz diorite gneiss, amphibolite gneiss, quartz monzonite.High1288.1%
Northern PiedmontGraphitic schists, phyllites, and felsic gneiss.Moderate911.9%

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

Cleburne County beside the ground around it

Cleburne County has more high-potential ground than Alabama as a whole: 88.1% of its land against 14.3%. Of the 8 counties that border it, none has as large a share of high-potential ground; Clay County comes nearest at 69.6%.

Share of land by USGS radon potential: Cleburne County, the 8 counties bordering it and Alabama
AreaEPA zoneLow potentialModerate potentialHigh potential
Cleburne CountyZone 1None11.9%88.1%
Haralson County, GAZone 2None99.9%0.1%
Calhoun CountyZone 1None64.9%35.1%
Carroll County, GAZone 2None100%None
Polk County, GAZone 377.3%21.4%1.3%
Randolph CountyZone 216.6%69.6%13.8%
Clay CountyZone 1None30.4%69.6%
Cherokee CountyZone 20.2%91.6%8.2%
Talladega CountyZone 1None45.2%54.8%
Alabama67 counties, pooled by land areaVaries35.2%50.4%14.3%

The map rates the ground, not the air in any home.

Local help

Cleburne County, Local resources

Radon testing and mitigation in Cleburne County

What Alabama's program says
Phone
(334) 290-6244

What it means

Cleburne County, Questions

Questions about radon in Cleburne County

Are radon levels high in Cleburne County?

Over the 2008 to 2017 laboratory totals, 18.8% of the radon tests reported to CDC for Cleburne County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.5 pCi/L. Of 27 Alabama counties with 30 or more tests for the same period, 6 reported a higher share; pooled, the state comes to 21.9%.

Which counties border Cleburne County?

Cleburne County borders 8 counties: Haralson County, GA, Calhoun County, AL, Carroll County, GA, Polk County, GA, Randolph County, AL, Clay County, AL, Cherokee County, AL and Talladega County, AL.

Products

Cleburne County, Products

Testing a home in Cleburne County

In Cleburne County, 18.8% of 69 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 21.9% pooled across Alabama. In Zone 1 the year-round level in Cleburne County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Cleburne County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Cleburne County

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Cleburne County, Bordering counties

Counties bordering Cleburne County

Calculated by Radon411

Cleburne County, Cities and towns

Cities and towns in Cleburne County

Cleburne County is growing: the Census Bureau puts it at 15,970 residents on July 1, 2025, up 6.0% from 15,062 in 2020. That works out to 29 people per square mile of land. Its largest town, Heflin, has 3,572 residents, 22.4% of the total. Together its 4 incorporated places hold 28.2% of those residents; the other 71.8% live outside any of them. Testing is reported here more often than across the state: CDC's 69 reported tests for 2008 to 2017 come to 4.3 for every 1,000 residents (2025 estimate), against 2.4 for Alabama.

From Heflin to Edwardsville, CDC publishes no figure by town: each reads Cleburne County's.

The cities and towns in Cleburne County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Heflin3,572+4.2%22.4%
Ranburne444+4.7%2.8%
Fruithurst267+10.3%1.7%
Edwardsville219+5.8%1.4%

4 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).

Cleburne County, Homes

Homes in Cleburne County

Of Cleburne County's 6,853 homes, 68% are detached houses, against 69% across Alabama; 29% are mobile homes. Half of its homes were built before 1986, close to Alabama's 1985: 16% date from before 1960 and 22% from 2000 or later. Owners live in 80% of the occupied homes (Alabama: 70%), so for most households a test and a fix are their own to order.

Homes in Cleburne County, Alabama, 2019 to 2023
HomesCleburne CountyAlabama
Housing units6,8532,316,192
Detached houses68%69%
In buildings of 5 or more2%12%
Mobile homes29%13%
Built before 196016%16%
Built since 200022%27%
Middle year built19861985
Owner-occupied80%70%

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