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Radon Levels in Greene County, Alabama

EPA puts Greene County in Zone 2, its middle 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

  • Highest bordering

    8.5%

    Tuscaloosa County

    Tuscaloosa
    8.5%

    1 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    8.5%

    Tuscaloosa County, 39 miles

    Tuscaloosa
    8.5%
    Alabama
    21.9%

    Share at 4+ pCi/L, 82 tests, 2008 to 2017

  • Ground above low

    100.0%

    35.3 pts above Alabama

    Greene
    100.0%
    Alabama
    64.7%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Greene
    2
    Needed
    30

    2007 to 2016, laboratory

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

Read a result for Greene 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

Greene County, At a glance

Greene County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Greene County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 1 reported test for Greene County over the 2008 to 2017 laboratory totals, a result of 0.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Greene County beside the counties around it is how this page reads it.

What these figures count

Only 1 test was reported to CDC for Greene 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

Greene County, Compared

Greene County radon figures, compared

Calculated by Radon411

CDC's largest figure for Greene County rests on 2 tests over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 3.3 pCi/L, with a middle value of 1.8 pCi/L.

Tuscaloosa County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 8.5% of its tests at or above 4 pCi/L. Farther out, Jefferson County (78 miles away) at 10.7%, Autauga County (79 miles away) at 17.1% and Shelby County (80 miles away) at 11.3% have figures too. Pooled across 65 Alabama counties, 21.9% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Colbert County reported the highest share (36.2%) and Baldwin County the lowest (0.0%). EPA's 1993 map puts Greene County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Alabama, the United States and the counties around Greene County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Alabama, pooled65 counties, pooled12,56921.9%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Colbert Countyhighest in the state87136.2%2.7 pCi/L
Baldwin Countylowest in the state310.0%1.0 pCi/L
Marengo County, ALborders it250.0%9.3 pCi/L
Hale County, ALborders it1050.0%3.9 pCi/L
Tuscaloosa County, ALborders it828.5%1.4 pCi/L
Sumter County, ALborders it20.0%2.3 pCi/L
Pickens County, ALborders it20.0%0.9 pCi/L
The nearest Alabama counties to Greene County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Tuscaloosa County39 mi828.5%1.4 pCi/L
Jefferson County78 mi91210.7%1.2 pCi/L
Autauga County79 mi3517.1%0.9 pCi/L
Shelby County80 mi37311.3%1.3 pCi/L
Elmore County107 mi3622.2%1.2 pCi/L
Cullman County108 mi7911.4%1.5 pCi/L
Franklin County110 mi19318.1%1.4 pCi/L
Talladega County110 mi12418.5%1.6 pCi/L
Greene County ten-year laboratory totals, against Alabama's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestAlabama, pooledChange from the row before
2008 to 201710.0%0.2 pCi/L0.2 pCi/L21.9%Level
2007 to 201620.0%1.8 pCi/L3.3 pCi/L22.0%Level
2006 to 201510.0%3.3 pCi/L3.3 pCi/L22.0%Level
2005 to 201410.0%3.3 pCi/L3.3 pCi/L22.4%First on file

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

Greene County, Geology

The ground under Greene County

Predicted

USGS's geologic map puts all of Greene County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Inner Coastal Plain, to which USGS gives a radon index of 10, in the moderate band (9 to 11).

USGS's geologic areas under Greene County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Inner Coastal PlainMarly sandy clay, chalk, and glauconitic sands.Moderate10100%

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

Greene County beside the ground around it

Across Alabama 14.3% of the land is rated high; none of Greene County's is. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Hale County comes nearest at 100%.

Share of land by USGS radon potential: Greene County, the 5 counties bordering it and Alabama
AreaEPA zoneLow potentialModerate potentialHigh potential
Greene CountyZone 2None100%None
Sumter CountyZone 241.8%58.2%None
Hale CountyZone 2None100%None
Pickens CountyZone 20.2%99.8%None
Marengo CountyZone 360.2%39.8%None
Tuscaloosa CountyZone 2None100%None
Alabama67 counties, pooled by land areaVaries35.2%50.4%14.3%

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

What it means

Greene County, Questions

Questions about radon in Greene County

Are radon levels high in Greene County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Greene County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.2 pCi/L. Tuscaloosa County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 8.5% of its tests at or above 4 pCi/L.

Which counties border Greene County?

Greene County borders 5 counties: Sumter County, Hale County, Pickens County, Marengo County and Tuscaloosa County.

Products

Greene County, Products

Testing a home in Greene County

No CDC figure names Greene County; the nearest county with one, Tuscaloosa County (39 miles away), reported 8.5% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Greene County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Greene County homes, compared

Explore

Greene County, Bordering counties

Counties bordering Greene County

Calculated by Radon411

Greene County, Cities and towns

Cities and towns in Greene County

Greene County has been losing residents: from 7,701 in 2020 to 7,067 on July 1, 2025, a fall of 8.2% by the Census Bureau's estimates. That works out to 11 people per square mile of land. Its largest town, Eutaw, has 2,640 residents, 37.4% of the total. Together its 4 incorporated places hold 49.4% of those residents; the other 50.6% live outside any of them. Reported testing is thin here: 2 tests over 2007 to 2016, or 0.3 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.5.

From Eutaw to Union, CDC publishes no figure by town: each reads Greene County's.

The cities and towns in Greene County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Eutaw2,640−9.6%37.4%
Forkland417−6.1%5.9%
Boligee271−9.4%3.8%
Union166−8.3%2.3%

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).

Greene County, Homes

Homes in Greene County

Mobile homes are 38% of Greene County's 4,258 homes and detached houses 53%, against 69% across Alabama. Half of its homes were built before 1982, close to Alabama's 1985: 18% date from before 1960 and 12% from 2000 or later. 70% 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 Greene County, Alabama, 2019 to 2023
HomesGreene CountyAlabama
Housing units4,2582,316,192
Detached houses53%69%
In buildings of 5 or more7%12%
Mobile homes38%13%
Built before 196018%16%
Built since 200012%27%
Middle year built19821985
Owner-occupied70%70%

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