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Radon Levels in Talladega County, Alabama

EPA puts Talladega County in Zone 1, its highest radon zone, and 18.5% of its 124 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

    18.5%

    3.4 pts below AL

    Talladega
    18.5%
    Alabama
    21.9%

    124 tests, 2008 to 2017

  • Median result

    1.6pCi/L

    Below action level

    Talladega
    1.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    124

    13th of 27 by tests

    Talladega
    124
    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

    8 of 27

    Middle half

    Talladega
    18.5%
    Colbert
    36.2%

    By share, of 27 with 30+ tests

Read a result for Talladega County

Starts at Talladega County's median, 1.6 pCi/L

1.6pCi/L

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

EPA’s reading of 1.6 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. Talladega County's median reported result, 2008 to 2017.

Interpret this reading

The data

Talladega County, At a glance

Talladega County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Talladega 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 55% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Talladega County, 2008 to 2017, laboratory
Under 2 pCi/L: 58%2 to 4 pCi/L: 23%4 pCi/L and above: 19%

Of 124 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Talladega County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L7258.1%
2 to 4 pCi/L2923.4%
4 pCi/L and above2318.5%
What these figures count

These are the 124 tests reported to CDC for Talladega 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

Talladega County, Compared

Talladega County radon figures, compared

Calculated by Radon411

Talladega County's 124 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.6 pCi/L and a maximum of 27.0 pCi/L, and 18.5% reached 4 pCi/L. Alabama as a whole (65 Alabama counties, pooled) comes to 21.9%: 3.4 points higher than here.

Among its state's counties it ranks 8th 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, 72 tests (58.1%) came in under 2 pCi/L, against 54.3% statewide, and 29 tests (23.4%) fell between 2 and 4, against 23.8% statewide. CDC's ten-year totals for Talladega County went from 119 tests (2005 to 2014) to 124 (2008 to 2017), the share going from 18.5% to 18.5%.

EPA's 1993 zone map puts Talladega County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 55% of the county's land high radon potential.

Next door, the shares run from 11.3% in Shelby County to 18.9% in Calhoun County, with Clay County, St. Clair County and Shelby County below Talladega County.

Talladega County against Alabama, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Talladega County
Talladega County12418.5%1.6 pCi/LThis county
Alabama, pooled65 counties, pooled12,56921.9%Not pooled+3.4 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+17.2 points
Colbert Countyhighest in the state87136.2%2.7 pCi/L+17.7 points
Baldwin Countylowest in the state310.0%1.0 pCi/L−18.5 points
Calhoun County, ALborders it23818.9%1.4 pCi/L+0.4 points
Cleburne County, ALborders it6918.8%1.5 pCi/L+0.3 points
Clay County, ALborders it3917.9%0.9 pCi/L−0.6 points
St. Clair County, ALborders it9314.0%1.2 pCi/L−4.5 points
Shelby County, ALborders it37311.3%1.3 pCi/L−7.2 points
Coosa County, ALborders it90.0%1.4 pCi/L−18.5 points
Where Talladega County's reported results fell, 2008 to 2017, laboratory, beside Alabama and the United States
ResultTalladega County testsTalladega County shareAlabama shareU.S. shareAgainst Alabama
Under 2 pCi/L7258.1%54.3%39.6%+3.8 points
2 to 4 pCi/L2923.4%23.8%24.7%−0.4 points
4 pCi/L and above2318.5%21.9%35.7%−3.4 points
Talladega 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
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
Lawrence County13 of 2715416.2%1.7 pCi/L
Talladega County ten-year laboratory totals, against Alabama's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestAlabama, pooledChange from the row before
2008 to 201712418.5%1.6 pCi/L27.0 pCi/L21.9%+0.1 points
2007 to 201613618.4%1.7 pCi/L27.0 pCi/L22.0%+2.0 points
2006 to 201514016.4%1.6 pCi/L27.0 pCi/L22.0%−2.1 points
2005 to 201411918.5%1.8 pCi/L27.0 pCi/L22.4%First on file

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

Talladega County, Geology

The ground under Talladega County

Predicted

USGS's geologic map splits Talladega County: 54.8% of its land is high radon potential and 45.2% moderate. The map puts 54.8% of Talladega County in the area it calls Northern Piedmont and 45.2% in Valley and Ridge. 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 Talladega County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Northern PiedmontSchist, metagraywake, phyllite, quartz diorite gneiss, amphibolite gneiss, quartz monzonite.High1254.8%
Valley and RidgeChattanooga black shale, Cambrian-Ordovician limestone and sandstone.Moderate945.2%

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

Talladega County beside the ground around it

Talladega County has more high-potential ground than Alabama as a whole: 54.8% of its land against 14.3%. Of the 6 counties that border it, 2 have more high-potential ground, Cleburne County the most at 88.1%.

Share of land by USGS radon potential: Talladega County, the 6 counties bordering it and Alabama
AreaEPA zoneLow potentialModerate potentialHigh potential
Talladega CountyZone 1None45.2%54.8%
Clay CountyZone 1None30.4%69.6%
St. Clair CountyZone 2None100%None
Calhoun CountyZone 1None64.9%35.1%
Shelby CountyZone 2None92.0%8.0%
Coosa CountyZone 1None53.4%46.6%
Cleburne CountyZone 1None11.9%88.1%
Alabama67 counties, pooled by land areaVaries35.2%50.4%14.3%

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

Local help

Talladega County, Local resources

Radon testing and mitigation in Talladega County

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

What it means

Talladega County, Questions

Questions about radon in Talladega County

Are radon levels high in Talladega County?

Over the 2008 to 2017 laboratory totals, 18.5% of the radon tests reported to CDC for Talladega County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Of 27 Alabama counties with 30 or more tests for the same period, 7 reported a higher share; pooled, the state comes to 21.9%.

Which counties border Talladega County?

Talladega County borders 6 counties: Clay County, St. Clair County, Calhoun County, Shelby County, Coosa County and Cleburne County.

Products

Talladega County, Products

Testing a home in Talladega County

In Talladega County, 18.5% of 124 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 Talladega 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

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

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Talladega County, Bordering counties

Counties bordering Talladega County

Calculated by Radon411

Talladega County, Cities and towns

Cities and towns in Talladega County

Talladega County's population has barely moved since 2020: 81,603 residents on July 1, 2025 against 81,390 then, by the Census Bureau's estimates. That works out to 111 people per square mile of land. Oxford, the largest place on its list (22,199 residents in all), extends beyond Talladega County, so no share of the total is worked out for it. Reported testing is thin here: 124 tests over 2008 to 2017, or 1.5 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.

From Oxford to Talladega Springs, CDC publishes no figure by town: each reads Talladega County's.

The cities and towns in Talladega County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Oxfordextends beyond Talladega County22,199+0.3%Counted whole
Talladega14,840−2.0%18.2%
Sylacauga12,055−3.9%14.8%
Lincoln8,110+17.5%9.9%
Childersburg4,571−3.5%5.6%
Vincentextends beyond Talladega County2,045+3.1%Counted whole
Munford1,371+2.3%1.7%
Oak Grove577+4.9%0.7%
Waldo257+2.4%0.3%
Bon Air167−2.3%0.2%
Talladega Springs145−0.7%0.2%

11 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 Talladega County is counted whole, so it has no share.

Talladega County, Homes

Homes in Talladega County

Of Talladega County's 38,285 homes, 64% are detached houses, against 69% across Alabama; 26% are mobile homes. Half of its homes were built before 1983, close to Alabama's 1985: 22% date from before 1960 and 22% from 2000 or later. 73% of occupied homes are lived in by their owner (Alabama: 70%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Talladega County, Alabama, 2019 to 2023
HomesTalladega CountyAlabama
Housing units38,2852,316,192
Detached houses64%69%
In buildings of 5 or more4%12%
Mobile homes26%13%
Built before 196022%16%
Built since 200022%27%
Middle year built19831985
Owner-occupied73%70%

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