Radon levels in Alabama

Verified county-level radon indicators are available for 65 Alabama counties. Select a county for its source period and sample details.

High results are most common in Colbert County (36%) and least common in Baldwin County (0%)Share of tests at or above 4 pCi/L by county · Radon test results from laboratories, 2008–2017 · 65 of 67 counties have data
Butler County: 0% of tests at or above 4 pCi/L · 1 testsCoffee County: 17% of tests at or above 4 pCi/L · 6 testsMorgan County: 15% of tests at or above 4 pCi/L · 453 testsBaldwin County: 0% of tests at or above 4 pCi/L · 31 testsLowndes County: 0% of tests at or above 4 pCi/L · 2 testsFayette County: 0% of tests at or above 4 pCi/L · 2 testsWinston County: 17% of tests at or above 4 pCi/L · 12 testsChilton County: 11% of tests at or above 4 pCi/L · 18 testsJefferson County: 11% of tests at or above 4 pCi/L · 912 testsClay County: 18% of tests at or above 4 pCi/L · 39 testsChambers County: 0% of tests at or above 4 pCi/L · 3 testsSt. Clair County: 14% of tests at or above 4 pCi/L · 93 testsLauderdale County: 27% of tests at or above 4 pCi/L · 1,885 testsDeKalb County: 13% of tests at or above 4 pCi/L · 68 testsGreene County: 0% of tests at or above 4 pCi/L · 1 testsCherokee County: 10% of tests at or above 4 pCi/L · 10 testsColbert County: 36% of tests at or above 4 pCi/L · 871 testsMontgomery County: 10% of tests at or above 4 pCi/L · 103 testsEtowah County: 20% of tests at or above 4 pCi/L · 56 testsFranklin County: 18% of tests at or above 4 pCi/L · 193 testsElmore County: 22% of tests at or above 4 pCi/L · 36 testsPerry County: 0% of tests at or above 4 pCi/L · 1 testsCalhoun County: 19% of tests at or above 4 pCi/L · 238 testsDallas County: 0% of tests at or above 4 pCi/L · 6 testsConecuh County: 0% of tests at or above 4 pCi/L · 2 testsChoctaw County: 0% of tests at or above 4 pCi/L · 1 testsSumter County: 0% of tests at or above 4 pCi/L · 2 testsRandolph County: 40% of tests at or above 4 pCi/L · 15 testsLimestone County: 10% of tests at or above 4 pCi/L · 674 testsMarshall County: 15% of tests at or above 4 pCi/L · 199 testsBullock County: no dataRussell County: 0% of tests at or above 4 pCi/L · 3 testsShelby County: 11% of tests at or above 4 pCi/L · 373 testsClarke County: 0% of tests at or above 4 pCi/L · 1 testsMarengo County: 50% of tests at or above 4 pCi/L · 2 testsHale County: 50% of tests at or above 4 pCi/L · 10 testsLamar County: 75% of tests at or above 4 pCi/L · 4 testsPickens County: 0% of tests at or above 4 pCi/L · 2 testsCoosa County: 0% of tests at or above 4 pCi/L · 9 testsWalker County: 33% of tests at or above 4 pCi/L · 15 testsWashington County: 0% of tests at or above 4 pCi/L · 4 testsCrenshaw County: 0% of tests at or above 4 pCi/L · 1 testsDale County: 0% of tests at or above 4 pCi/L · 1 testsLee County: 12% of tests at or above 4 pCi/L · 81 testsAutauga County: 17% of tests at or above 4 pCi/L · 35 testsBarbour County: 0% of tests at or above 4 pCi/L · 2 testsMobile County: 4% of tests at or above 4 pCi/L · 52 testsBibb County: 25% of tests at or above 4 pCi/L · 4 testsPike County: 44% of tests at or above 4 pCi/L · 9 testsGeneva County: 0% of tests at or above 4 pCi/L · 5 testsHouston County: 23% of tests at or above 4 pCi/L · 13 testsMarion County: 8% of tests at or above 4 pCi/L · 25 testsCleburne County: 19% of tests at or above 4 pCi/L · 69 testsMadison County: 25% of tests at or above 4 pCi/L · 5,178 testsWilcox County: no dataBlount County: 14% of tests at or above 4 pCi/L · 44 testsLawrence County: 16% of tests at or above 4 pCi/L · 154 testsTuscaloosa County: 9% of tests at or above 4 pCi/L · 82 testsMacon County: 22% of tests at or above 4 pCi/L · 9 testsTallapoosa County: 6% of tests at or above 4 pCi/L · 16 testsJackson County: 17% of tests at or above 4 pCi/L · 223 testsCovington County: 0% of tests at or above 4 pCi/L · 2 testsMonroe County: 0% of tests at or above 4 pCi/L · 2 testsTalladega County: 19% of tests at or above 4 pCi/L · 124 testsHenry County: 0% of tests at or above 4 pCi/L · 1 testsEscambia County: 0% of tests at or above 4 pCi/L · 2 testsCullman County: 11% of tests at or above 4 pCi/L · 79 tests
  • Under 10%
  • 10–20%
  • 20–30%
  • 30–40%
  • 40% or more
  • No data

Counties

CountyTests% ≥ 4 pCi/LMedian (pCi/L)EPA zone (1993)Source
Autauga County3517%0.9Zone 2Radon test results from laboratories through 2017
Baldwin County310%1.0Zone 3Radon test results from laboratories through 2017
Barbour County20%0.6Zone 2Radon test results from laboratories through 2017
Bibb County425%2.5Zone 2Radon test results from laboratories through 2017
Blount County4414%2.0Zone 2Radon test results from laboratories through 2017
Bullock County———Zone 2—
Butler County10%0.9Zone 3Radon test results from laboratories through 2017
Calhoun County23819%1.4Zone 1Radon test results from laboratories through 2017
Chambers County30%0.8Zone 3Radon test results from laboratories through 2017
Cherokee County1010%1.5Zone 2Radon test results from laboratories through 2017
Chilton County1811%1.1Zone 2Radon test results from laboratories through 2017
Choctaw County10%0.8Zone 3Radon test results from laboratories through 2017
Clarke County10%0.4Zone 3Radon test results from laboratories through 2017
Clay County3918%0.9Zone 1Radon test results from laboratories through 2017
Cleburne County6919%1.5Zone 1Radon test results from laboratories through 2017
Coffee County617%2.4Zone 3Radon test results from laboratories through 2017
Colbert County87136%2.7Zone 1Radon test results from laboratories through 2017
Conecuh County20%0.6Zone 3Radon test results from laboratories through 2017
Coosa County90%1.4Zone 1Radon test results from laboratories through 2017
Covington County20%0.6Zone 3Radon test results from laboratories through 2017
Crenshaw County10%1.1Zone 3Radon test results from laboratories through 2017
Cullman County7911%1.5Zone 2Radon test results from laboratories through 2017
Dale County10%2.1Zone 3Radon test results from laboratories through 2017
Dallas County60%0.5Zone 2Radon test results from laboratories through 2017
DeKalb County6813%0.9Zone 2Radon test results from laboratories through 2017
Elmore County3622%1.2Zone 2Radon test results from laboratories through 2017
Escambia County20%1.2Zone 3Radon test results from laboratories through 2017
Etowah County5620%1.4Zone 2Radon test results from laboratories through 2017
Fayette County20%1.1Zone 2Radon test results from laboratories through 2017
Franklin County19318%1.4Zone 1Radon test results from laboratories through 2017
Geneva County50%1.2Zone 3Radon test results from laboratories through 2017
Greene County10%0.2Zone 2Radon test results from laboratories through 2017
Hale County1050%3.9Zone 2Radon test results from laboratories through 2017
Henry County10%2.1Zone 3Radon test results from laboratories through 2017
Houston County1323%1.3Zone 3Radon test results from laboratories through 2017
Jackson County22317%1.5Zone 1Radon test results from laboratories through 2017
Jefferson County91211%1.2Zone 2Radon test results from laboratories through 2017
Lamar County475%7.5Zone 2Radon test results from laboratories through 2017
Lauderdale County1,88527%2.2Zone 1Radon test results from laboratories through 2017
Lawrence County15416%1.7Zone 1Radon test results from laboratories through 2017
Lee County8112%1.3Zone 2Radon test results from laboratories through 2017
Limestone County67410%1.3Zone 1Radon test results from laboratories through 2017
Lowndes County20%0.9Zone 2Radon test results from laboratories through 2017
Macon County922%0.1Zone 2Radon test results from laboratories through 2017
Madison County5,17825%1.9Zone 1Radon test results from laboratories through 2017
Marengo County250%9.3Zone 3Radon test results from laboratories through 2017
Marion County258%1.0Zone 2Radon test results from laboratories through 2017
Marshall County19915%1.3Zone 2Radon test results from laboratories through 2017
Mobile County524%0.5Zone 3Radon test results from laboratories through 2017
Monroe County20%0.2Zone 3Radon test results from laboratories through 2017
Montgomery County10310%0.9Zone 2Radon test results from laboratories through 2017
Morgan County45315%1.4Zone 1Radon test results from laboratories through 2017
Perry County10%3.2Zone 2Radon test results from laboratories through 2017
Pickens County20%0.9Zone 2Radon test results from laboratories through 2017
Pike County944%1.7Zone 3Radon test results from laboratories through 2017
Randolph County1540%3.7Zone 2Radon test results from laboratories through 2017
Russell County30%0.9Zone 2Radon test results from laboratories through 2017
Shelby County37311%1.3Zone 2Radon test results from laboratories through 2017
St. Clair County9314%1.2Zone 2Radon test results from laboratories through 2017
Sumter County20%2.3Zone 2Radon test results from laboratories through 2017
Talladega County12419%1.6Zone 1Radon test results from laboratories through 2017
Tallapoosa County166%0.9Zone 3Radon test results from laboratories through 2017
Tuscaloosa County829%1.4Zone 2Radon test results from laboratories through 2017
Walker County1533%1.4Zone 2Radon test results from laboratories through 2017
Washington County40%1.4Zone 3Radon test results from laboratories through 2017
Wilcox County———Zone 3—
Winston County1217%1.6Zone 2Radon test results from laboratories through 2017

Test your home

County figures show how often tests come back high, not the level in your home. Only a test tells you that: see how to test for radon.

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