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Radon zones in Georgia

The EPA assigns every county in Georgia to one of three radon potential zones. 4 are in Zone 1, the highest category, home to about 33% of the state's residents.

159
Counties
4
Zone 1 counties
Predicted average above 4 pCi/L
55
Zone 2 counties
Predicted average 2-4 pCi/L
100
Zone 3 counties
Predicted average below 2 pCi/L

The map

Radon potential across Georgia

Every county in Georgia, filled by the zone the EPA assigns it. Zones follow geology rather than county lines, so the colour usually changes where the bedrock does, not where the border is.

Zone 1 · 4Zone 2 · 55Zone 3 · 100

Hover a county · click to open it

County by county

All 159 Georgia counties

Zone 1 · > 4 pCi/LZone 2 · 2 - 4 pCi/LZone 3 · < 2 pCi/L
CountyZonePopulationCOPDSmokingLung ca. deaths
Cobb County1777k4.8%10.4%24.3
DeKalb County1763k5.2%11.5%21.8
Fulton County11.1M4.5%9.9%25.6
Gwinnett County1984k5.0%11.7%24.3
Banks County220k8.8%17.3%41.2
Barrow County293k6.5%15.0%43.9
Bartow County2115k7.1%15.2%44.2
Butts County227k8.0%17.4%43.1
Carroll County2127k7.3%16.1%40.7
Catoosa County269k7.5%14.7%35.5
Cherokee County2287k5.6%11.7%27.5
Clarke County2130k5.8%12.3%25.4
Clayton County2298k6.5%16.0%28.8
Coweta County2156k5.9%12.3%31.7
Dawson County232k6.8%12.6%35.6
Douglas County2149k5.8%13.7%33.1
Elbert County220k9.6%17.8%52.2
Fannin County226k10.6%16.1%37.3
Fayette County2123k5.3%9.6%22.8
Floyd County2100k8.1%16.0%44.6
Forsyth County2273k4.2%9.2%23.8
Franklin County225k9.6%17.9%45.6
Gilmer County233k9.5%15.0%35.5
Greene County221k7.9%12.1%26.0
Habersham County249k8.0%15.0%34.4
Hall County2217k7.1%14.0%28.6
Haralson County232k8.2%17.4%45.1
Harris County237k6.3%12.2%28.0
Hart County228k9.0%16.0%28.1
Heard County212k9.2%18.3%49.4
Henry County2255k5.5%12.9%31.7
Jackson County289k6.6%14.6%40.6
Jasper County216k8.6%17.3%33.6
Lamar County220k7.6%15.5%40.1
Lumpkin County235k7.2%13.5%45.4
Madison County232k9.5%18.2%49.1
Meriwether County221k9.9%18.6%39.7
Monroe County231k7.1%14.2%41.4
Morgan County221k6.8%13.0%33.8
Newton County2120k6.6%14.8%32.0
Oconee County244k4.8%9.3%20.8
Oglethorpe County216k8.0%15.3%40.3
Paulding County2183k5.5%12.7%34.6
Pickens County236k8.5%15.1%44.9
Pike County220k7.1%14.9%51.0
Rabun County217k9.4%14.6%38.6
Richmond County2205k7.5%16.2%40.9
Rockdale County296k6.8%14.1%31.0
Spalding County270k8.8%17.0%46.2
Stephens County227k9.6%17.8%42.9
Talbot County25,71811.3%18.7%45.9
Towns County213k9.7%12.8%40.8
Troup County271k8.2%16.9%40.3
Union County227k9.9%14.2%31.4
Upson County228k9.5%18.8%44.1
Walker County269k8.8%16.7%45.5
Walton County2107k7.3%14.9%34.9
White County229k8.4%14.7%45.9
Whitfield County2104k7.5%15.6%44.5
Appling County318k11.0%20.3%38.5
Atkinson County38,29311.0%22.0%84.6
Bacon County311k9.5%18.8%62.0
Baker County32,74312.4%20.0% -
Baldwin County343k8.1%15.8%36.7
Ben Hill County317k11.1%21.3%42.9
Berrien County319k10.7%20.7%47.0
Bibb County3157k8.4%16.8%37.5
Bleckley County312k8.8%16.6%43.4
Brantley County318k10.3%19.6%50.6
Brooks County316k11.6%19.8%27.3
Bryan County350k5.0%12.3%41.8
Bulloch County384k6.6%14.1%28.8
Burke County324k9.8%19.0%33.5
Calhoun County35,4579.3%20.8% -
Camden County358k6.9%14.8%36.0
Candler County311k9.8%18.6%28.6
Charlton County313k9.1%20.1%45.8
Chatham County3304k6.4%13.3%30.4
Chattahoochee County38,6614.3%13.5% -
Chattooga County325k11.3%21.3%55.8
Clay County32,85311.0%17.2% -
Clinch County36,74611.0%21.2%48.7
Coffee County343k9.8%20.7%47.7
Colquitt County346k9.6%19.2%43.6
Columbia County3165k5.5%11.9%30.6
Cook County318k10.1%19.7%40.6
Crawford County312k9.0%17.1%57.0
Crisp County320k11.0%19.9%49.2
Dade County316k8.2%15.2%42.5
Decatur County329k9.7%18.9%41.2
Dodge County320k9.8%18.7%46.9
Dooly County311k9.2%18.1%40.1
Dougherty County383k9.1%17.7%37.7
Early County311k10.3%18.8%48.7
Echols County33,7097.4%16.3% -
Effingham County372k6.1%14.1%43.6
Emanuel County323k10.0%20.3%52.2
Evans County311k9.6%19.2%37.3
Glascock County32,9549.4%18.1% -
Glynn County386k8.2%14.4%35.2
Gordon County360k8.7%17.3%49.1
Grady County326k9.7%17.9%24.5
Hancock County38,67611.9%21.9%37.6
Houston County3172k5.9%13.0%33.1
Irwin County39,1209.6%18.3%29.8
Jeff Davis County315k10.6%20.6%39.3
Jefferson County315k10.1%19.9%41.7
Jenkins County38,62710.9%21.9%32.1
Johnson County39,28210.7%21.5%42.7
Jones County329k7.9%15.9%37.2
Lanier County310k9.7%19.7%49.3
Laurens County350k9.4%18.1%46.5
Lee County334k5.9%13.1%41.0
Liberty County369k5.5%14.3%41.8
Lincoln County37,87910.7%18.0%35.7
Long County320k6.7%17.2%44.9
Lowndes County3121k7.0%15.0%30.5
Macon County312k11.3%22.7%47.4
Marion County37,44010.5%18.5%44.1
McDuffie County322k9.2%17.3%41.3
McIntosh County312k12.3%19.2%43.2
Miller County35,74710.7%17.8%67.1
Mitchell County321k9.8%19.3%44.3
Montgomery County38,7618.7%17.0%49.8
Murray County341k8.4%17.0%57.1
Muscogee County3202k7.1%15.1%36.0
Peach County329k7.1%14.3%51.9
Pierce County320k9.3%18.2%50.0
Polk County344k8.9%17.9%48.3
Pulaski County310k10.2%18.9%40.2
Putnam County323k9.5%15.5%30.8
Quitman County32,28013.1%19.3% -
Randolph County36,07813.7%21.1%37.7
Schley County34,5268.5%16.0% -
Screven County314k9.7%18.2%39.5
Seminole County39,09210.2%17.0%35.9
Stewart County34,6749.3%20.7% -
Sumter County329k8.6%16.4%35.2
Taliaferro County31,60910.8%18.1% -
Tattnall County324k9.5%20.2%43.8
Taylor County37,75812.6%21.7%44.5
Telfair County311k12.0%22.7%36.8
Terrell County38,71811.6%21.1%43.5
Thomas County346k8.5%15.9%42.3
Tift County342k8.6%17.5%37.1
Toombs County327k9.1%17.5%50.1
Treutlen County36,34111.9%22.5%62.2
Turner County38,90911.1%20.2%34.0
Twiggs County37,69110.3%18.4%39.1
Ware County336k10.0%19.6%49.6
Warren County35,10610.5%18.6%44.1
Washington County320k9.7%19.3%42.6
Wayne County331k10.0%20.0%48.1
Webster County32,33711.4%18.5% -
Wheeler County37,0819.6%21.0% -
Wilcox County38,77910.3%20.2%35.5
Wilkes County39,51810.2%17.8%42.6
Wilkinson County38,7259.7%18.0%50.7
Worth County320k10.1%18.9%44.7

Zones from the EPA Map of Radon Zones. COPD and smoking are CDC PLACES model-based estimates of adult prevalence. Lung cancer death rates are age-adjusted deaths per 100,000 per year, 2019-2023, from NCI State Cancer Profiles. A dash means the source does not report a value for that county.

Highest potential

Zone 1 counties in Georgia

These 4 counties have a predicted average indoor radon screening level above the EPA action level. The EPA recommends every home in them be tested.

Other states

Radon zones elsewhere