Is radon high in Georgia?

Georgia's population-weighted predicted basement average is 1.9 pCi/L, close to the US average of 1.8. 0 of its 159 modeled counties are predicted at or above the EPA action level of 4 pCi/L, 44 are in the 2-4 "consider fixing" range and 115 are below 2. 0% of Georgia ZIP codes are predicted at 4 or higher.

Which Georgia county has the highest radon?

Walton County has the highest predicted basement average in Georgia at 2.8 pCi/L (EPA Zone 2). The lowest is Lanier County at 1.3 pCi/L. These are area figures; individual homes in any county can test far higher.

How many EPA Zone 1 counties are in Georgia?

4 of Georgia's 159 counties (3%) are EPA Zone 1 (highest potential), 55 are Zone 2 and 100 are Zone 3. The EPA zone map dates from 1993; the predicted values on this page come from a 2001-2021 model built on millions of actual tests, so the two can disagree for a given county.

Should I test for radon in Georgia?

Yes. Even though Georgia's predicted average is below 2 pCi/L, the EPA recommends every home be tested - radon varies house to house, and 29.1% of Georgia ZIP codes are still predicted at 2 pCi/L or higher.

Radon levels in Georgia: Low

Name: Radon levels by county for Georgia
Creator: RadonGrade
License: https://creativecommons.org/licenses/by/4.0/

The model predicts a population-weighted basement average of 1.9 pCi/L (model estimate) across Georgia's 159 counties - close to the US average of 1.8 pCi/L. Above-ground floors average 1.0 pCi/L.

Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

4 / 159

EPA Zone 1 counties (3%)

55 / 100

Zone 2 / Zone 3 counties

counties predicted ≥ 4 pCi/L

of ZIP codes predicted ≥ 4 pCi/L

Test Georgia once anyway - radon varies house to house

The predicted basement average here is 1.9 pCi/L, below the EPA's 2 pCi/L "consider fixing" threshold. That's good news for the area - but the EPA still recommends every home be tested, because foundation cracks, soil pockets and ventilation make one house very different from its neighbor. One inexpensive kit settles it.

Get a short-term test kit →Or track it with a continuous monitor

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What the data says about radon in Georgia

According to the EPA zone map, 4 of Georgia's 159 counties are EPA Zone 1 (3%), 55 are Zone 2 and 100 are Zone 3. Most counties fall in Zone 3, the EPA's lowest-potential class (predicted screening average under 2 pCi/L), but 4 counties are still Zone 1. Treat the map as a coarse prior: it predates two decades of test data and never replaces a test in your own home.

The 2001-2021 national model predicts a population-weighted basement average of 1.9 pCi/L for Georgia (low range, close to the US average of 1.8). Of the 159 counties with predictions, 0 are predicted at or above 4 pCi/L, 44 in the 2-4 band and 115 below 2. The highest predicted county is Walton County at 2.8 pCi/L; the lowest is Lanier County at 1.3 - a 1.6 pCi/L spread that means a statewide average tells you little about any one county.

29.1% of the state's modeled ZIP codes are predicted at or above 2 pCi/L, and 0% at or above the 4 pCi/L action level - below the national shares of 4.2% and 48.7%. No ZIP in the state is predicted above 4 on average - but averages hide individual homes, which is why the EPA still asks everyone to test.

Georgia counties by predicted radon

Sorted highest to lowest predicted basement average (model estimate). 159 counties.

County	Predicted basement	Upstairs	Grade	EPA zone	ZIPs
Walton County	2.8 pCi/L	1.6	Moderate	EPA Zone 2	5
Gilmer County	2.8 pCi/L	1.4	Moderate	EPA Zone 2	3
Barrow County	2.6 pCi/L	1.6	Moderate	EPA Zone 2	4
Union County	2.6 pCi/L	1.1	Moderate	EPA Zone 2	2
Fannin County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	5
Habersham County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	4
White County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	3
Carroll County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	8
Hall County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	10
Jackson County	2.5 pCi/L	1.4	Moderate	EPA Zone 2	9
Rabun County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	5
Towns County	2.5 pCi/L	1.2	Moderate	EPA Zone 2	2
Pickens County	2.4 pCi/L	1.4	Moderate	EPA Zone 2	3
Haralson County	2.4 pCi/L	1.2	Moderate	EPA Zone 2	3
Madison County	2.4 pCi/L	1.2	Moderate	EPA Zone 2	4
Banks County	2.4 pCi/L	1.1	Moderate	EPA Zone 2	4
Stephens County	2.3 pCi/L	1.2	Moderate	EPA Zone 2	2
Pike County	2.3 pCi/L	1.2	Moderate	EPA Zone 2	5
Lamar County	2.3 pCi/L	1.2	Moderate	EPA Zone 2	2
Spalding County	2.3 pCi/L	1.4	Moderate	EPA Zone 2	2
Lumpkin County	2.3 pCi/L	0.9	Moderate	EPA Zone 2	1
Douglas County	2.2 pCi/L	1.2	Moderate	EPA Zone 2	4
Franklin County	2.2 pCi/L	1.0	Moderate	EPA Zone 2	4
Gwinnett County	2.2 pCi/L	1.2	Moderate	EPA Zone 1	16
Coweta County	2.1 pCi/L	1.2	Moderate	EPA Zone 2	6
Hart County	2.1 pCi/L	1.1	Moderate	EPA Zone 2	3
Meriwether County	2.1 pCi/L	1.0	Moderate	EPA Zone 2	6
Newton County	2.1 pCi/L	1.2	Moderate	EPA Zone 2	4
Dade County	2.1 pCi/L	1.0	Moderate	EPA Zone 3	3
Troup County	2.1 pCi/L	1.1	Moderate	EPA Zone 2	3
Rockdale County	2.1 pCi/L	1.2	Moderate	EPA Zone 2	3
Catoosa County	2.1 pCi/L	1.0	Moderate	EPA Zone 2	2
Henry County	2.1 pCi/L	1.2	Moderate	EPA Zone 2	5
Oglethorpe County	2.1 pCi/L	1.0	Moderate	EPA Zone 2	6
Butts County	2.1 pCi/L	1.1	Moderate	EPA Zone 2	3
Dawson County	2.1 pCi/L	1.1	Moderate	EPA Zone 2	2
Walker County	2.0 pCi/L	1.0	Moderate	EPA Zone 2	6
Clayton County	2.0 pCi/L	1.1	Moderate	EPA Zone 2	7
Polk County	2.0 pCi/L	1.1	Moderate	EPA Zone 3	3
Morgan County	2.0 pCi/L	1.0	Moderate	EPA Zone 2	3
Elbert County	2.0 pCi/L	1.0	Moderate	EPA Zone 2	3
Harris County	2.0 pCi/L	1.1	Moderate	EPA Zone 2	9
Jasper County	2.0 pCi/L	1.0	Moderate	EPA Zone 2	3
Paulding County	2.0 pCi/L	1.0	Moderate	EPA Zone 2	3
Fayette County	2.0 pCi/L	1.1	Low	EPA Zone 2	5
Murray County	2.0 pCi/L	1.0	Low	EPA Zone 3	3
Heard County	2.0 pCi/L	1.0	Low	EPA Zone 2	1
Monroe County	1.9 pCi/L	1.0	Low	EPA Zone 2	3
DeKalb County	1.9 pCi/L	1.2	Low	EPA Zone 1	27
Upson County	1.9 pCi/L	0.8	Low	EPA Zone 2	3
Floyd County	1.9 pCi/L	1.1	Low	EPA Zone 2	6
Bartow County	1.9 pCi/L	1.0	Low	EPA Zone 2	8
Fulton County	1.9 pCi/L	1.2	Low	EPA Zone 1	34
Whitfield County	1.9 pCi/L	0.9	Low	EPA Zone 2	5
Cherokee County	1.9 pCi/L	1.0	Low	EPA Zone 2	7
Chattooga County	1.8 pCi/L	0.9	Low	EPA Zone 3	4
Gordon County	1.8 pCi/L	0.9	Low	EPA Zone 3	6
Forsyth County	1.8 pCi/L	1.1	Low	EPA Zone 2	3
Schley County	1.8 pCi/L	0.9	Low	EPA Zone 3	1
Clarke County	1.7 pCi/L	0.9	Low	EPA Zone 2	3
Cobb County	1.7 pCi/L	1.0	Low	EPA Zone 1	17
Talbot County	1.7 pCi/L	0.8	Low	EPA Zone 2	3
Terrell County	1.7 pCi/L	1.0	Low	EPA Zone 3	3
Bleckley County	1.7 pCi/L	1.0	Low	EPA Zone 3	1
Oconee County	1.7 pCi/L	1.0	Low	EPA Zone 2	3
Treutlen County	1.7 pCi/L	0.9	Low	EPA Zone 3	1
Lee County	1.7 pCi/L	1.1	Low	EPA Zone 3	3
Laurens County	1.6 pCi/L	1.0	Low	EPA Zone 3	8
Marion County	1.6 pCi/L	0.8	Low	EPA Zone 3	2
Pulaski County	1.6 pCi/L	1.1	Low	EPA Zone 3	2
Twiggs County	1.6 pCi/L	0.9	Low	EPA Zone 3	2
Greene County	1.6 pCi/L	0.9	Low	EPA Zone 2	3
McDuffie County	1.6 pCi/L	0.8	Low	EPA Zone 3	2
Wilcox County	1.6 pCi/L	1.0	Low	EPA Zone 3	3
Johnson County	1.6 pCi/L	0.9	Low	EPA Zone 3	2
Wilkes County	1.6 pCi/L	0.8	Low	EPA Zone 3	3
Montgomery County	1.6 pCi/L	1.0	Low	EPA Zone 3	3
Stewart County	1.6 pCi/L	0.9	Low	EPA Zone 3	3
Taliaferro County	1.6 pCi/L	0.8	Low	EPA Zone 3	1
Wilkinson County	1.6 pCi/L	0.8	Low	EPA Zone 3	5
Worth County	1.6 pCi/L	1.0	Low	EPA Zone 3	7
Crisp County	1.6 pCi/L	1.0	Low	EPA Zone 3	2
Dodge County	1.6 pCi/L	1.0	Low	EPA Zone 3	4
Lincoln County	1.6 pCi/L	0.9	Low	EPA Zone 3	1
Putnam County	1.6 pCi/L	0.9	Low	EPA Zone 3	1
Seminole County	1.6 pCi/L	1.0	Low	EPA Zone 3	2
Ben Hill County	1.5 pCi/L	0.9	Low	EPA Zone 3	1
Candler County	1.5 pCi/L	1.0	Low	EPA Zone 3	2
Peach County	1.5 pCi/L	0.8	Low	EPA Zone 3	2
Warren County	1.5 pCi/L	0.8	Low	EPA Zone 3	3
Wheeler County	1.5 pCi/L	0.9	Low	EPA Zone 3	2
Baldwin County	1.5 pCi/L	0.8	Low	EPA Zone 3	1
Dooly County	1.5 pCi/L	0.9	Low	EPA Zone 3	4
Early County	1.5 pCi/L	1.0	Low	EPA Zone 3	3
Hancock County	1.5 pCi/L	0.8	Low	EPA Zone 3	2
Sumter County	1.5 pCi/L	0.8	Low	EPA Zone 3	6
Thomas County	1.5 pCi/L	1.0	Low	EPA Zone 3	5
Bacon County	1.5 pCi/L	0.9	Low	EPA Zone 3	1
Jones County	1.5 pCi/L	0.9	Low	EPA Zone 3	5
Macon County	1.5 pCi/L	0.9	Low	EPA Zone 3	4
Washington County	1.5 pCi/L	0.8	Low	EPA Zone 3	5
Calhoun County	1.5 pCi/L	0.9	Low	EPA Zone 3	4
Coffee County	1.5 pCi/L	0.9	Low	EPA Zone 3	6
Glascock County	1.5 pCi/L	0.8	Low	EPA Zone 3	2
Irwin County	1.5 pCi/L	0.9	Low	EPA Zone 3	3
Mitchell County	1.5 pCi/L	0.9	Low	EPA Zone 3	5
Toombs County	1.5 pCi/L	1.0	Low	EPA Zone 3	3
Crawford County	1.5 pCi/L	0.8	Low	EPA Zone 3	3
Emanuel County	1.5 pCi/L	0.9	Low	EPA Zone 3	5
Houston County	1.5 pCi/L	0.9	Low	EPA Zone 3	8
Jenkins County	1.5 pCi/L	0.9	Low	EPA Zone 3	2
Tift County	1.5 pCi/L	1.1	Low	EPA Zone 3	2
Burke County	1.5 pCi/L	1.0	Low	EPA Zone 3	4
Decatur County	1.5 pCi/L	1.0	Low	EPA Zone 3	5
Grady County	1.5 pCi/L	1.0	Low	EPA Zone 3	3
Randolph County	1.5 pCi/L	0.9	Low	EPA Zone 3	3
Screven County	1.5 pCi/L	0.8	Low	EPA Zone 3	3
Brooks County	1.5 pCi/L	1.0	Low	EPA Zone 3	5
Long County	1.5 pCi/L	0.7	Low	EPA Zone 3	1
Pierce County	1.5 pCi/L	1.0	Low	EPA Zone 3	3
Appling County	1.4 pCi/L	0.8	Low	EPA Zone 3	3
Bryan County	1.4 pCi/L	0.7	Low	EPA Zone 3	3
Dougherty County	1.4 pCi/L	1.0	Low	EPA Zone 3	4
Jefferson County	1.4 pCi/L	0.9	Low	EPA Zone 3	7
Columbia County	1.4 pCi/L	0.8	Low	EPA Zone 3	5
Echols County	1.4 pCi/L	0.9	Low	EPA Zone 3	3
Webster County	1.4 pCi/L	0.9	Low	EPA Zone 3	2
Bulloch County	1.4 pCi/L	0.9	Low	EPA Zone 3	5
Camden County	1.4 pCi/L	0.7	Low	EPA Zone 3	5
Taylor County	1.4 pCi/L	0.8	Low	EPA Zone 3	4
Baker County	1.4 pCi/L	1.0	Low	EPA Zone 3	1
Lowndes County	1.4 pCi/L	1.0	Low	EPA Zone 3	6
McIntosh County	1.4 pCi/L	0.7	Low	EPA Zone 3	2
Berrien County	1.4 pCi/L	0.9	Low	EPA Zone 3	4
Colquitt County	1.4 pCi/L	0.9	Low	EPA Zone 3	5
Effingham County	1.4 pCi/L	0.8	Low	EPA Zone 3	4
Jeff Davis County	1.4 pCi/L	0.9	Low	EPA Zone 3	2
Turner County	1.4 pCi/L	1.0	Low	EPA Zone 3	3
Cook County	1.4 pCi/L	0.9	Low	EPA Zone 3	3
Miller County	1.4 pCi/L	1.0	Low	EPA Zone 3	1
Telfair County	1.4 pCi/L	0.9	Low	EPA Zone 3	5
Bibb County	1.4 pCi/L	0.8	Low	EPA Zone 3	7
Tattnall County	1.4 pCi/L	1.0	Low	EPA Zone 3	3
Wayne County	1.4 pCi/L	0.8	Low	EPA Zone 3	4
Chattahoochee County	1.4 pCi/L	0.8	Low	EPA Zone 3	2
Clinch County	1.4 pCi/L	0.9	Low	EPA Zone 3	3
Quitman County	1.4 pCi/L	0.8	Low	EPA Zone 3	2
Charlton County	1.4 pCi/L	0.8	Low	EPA Zone 3	2
Clay County	1.4 pCi/L	0.8	Low	EPA Zone 3	2
Glynn County	1.4 pCi/L	0.7	Low	EPA Zone 3	6
Liberty County	1.4 pCi/L	0.7	Low	EPA Zone 3	5
Evans County	1.4 pCi/L	1.0	Low	EPA Zone 3	1
Richmond County	1.4 pCi/L	0.8	Low	EPA Zone 2	7
Atkinson County	1.3 pCi/L	0.9	Low	EPA Zone 3	3
Brantley County	1.3 pCi/L	0.8	Low	EPA Zone 3	4
Ware County	1.3 pCi/L	0.9	Low	EPA Zone 3	4
Chatham County	1.3 pCi/L	0.7	Low	EPA Zone 3	13
Muscogee County	1.3 pCi/L	0.8	Low	EPA Zone 3	8
Lanier County	1.3 pCi/L	0.8	Low	EPA Zone 3	2

Radon levels in Georgia cities

The 21 most-populous Georgia places among the 1,000 largest US cities (Census incorporated places and CDPs), by population. City figures are ZIP-land-weighted means of the model's ZIP predictions (model estimate).

City	Population	Predicted basement	Upstairs	Grade	ZIPs ≥ 4
Atlanta	510,823	1.9 pCi/L	1.1	Low	0%
Columbus	201,877	1.4 pCi/L	0.8	Low	0%
Augusta	200,884	1.4 pCi/L	0.8	Low	0%
Macon	156,512	1.5 pCi/L	0.8	Low	0%
Savannah	147,748	1.3 pCi/L	0.6	Low	0%
Athens	128,628	1.8 pCi/L	0.9	Low	0%
South Fulton	110,920	2.1 pCi/L	1.2	Moderate	0%
Sandy Springs	105,793	2.0 pCi/L	1.2	Moderate	0%
Roswell	91,706	1.9 pCi/L	1.3	Low	0%
Warner Robins	84,537	1.5 pCi/L	0.8	Low	0%
Johns Creek	81,108	1.9 pCi/L	1.3	Low	0%
Alpharetta	67,056	1.9 pCi/L	1.3	Low	0%
Albany	66,877	1.5 pCi/L	1.0	Low	0%
Marietta	62,769	1.7 pCi/L	0.9	Low	0%
Stonecrest	60,677	2.1 pCi/L	1.5	Moderate	0%
Brookhaven	57,945	1.9 pCi/L	1.3	Low	0%
Smyrna	56,566	1.9 pCi/L	1.2	Low	0%
Valdosta	55,025	1.4 pCi/L	1.0	Low	0%
Dunwoody	51,713	1.9 pCi/L	1.3	Low	0%
Gainesville	47,265	2.3 pCi/L	1.2	Moderate	0%
Newnan	44,940	2.1 pCi/L	1.2	Moderate	0%

Highest-radon ZIP codes in Georgia

The 10 Georgia ZIP codes with the highest predicted basement average (model estimate), out of 670 modeled. A ZIP average is still an area figure - neighboring homes routinely test several pCi/L apart.

ZIP	County	Predicted basement	Upstairs	Grade
30519	Gwinnett County	3.3 pCi/L	1.6	Moderate
30542	Hall County	3.0 pCi/L	1.5	Moderate
30548	Jackson County	3.0 pCi/L	2.1	Moderate
30052	Walton County	2.9 pCi/L	1.7	Moderate
30540	Gilmer County	2.9 pCi/L	1.4	Moderate
30017	Gwinnett County	2.9 pCi/L	2.1	Moderate
30656	Walton County	2.8 pCi/L	1.5	Moderate
30517	Jackson County	2.8 pCi/L	1.6	Moderate
30180	Carroll County	2.8 pCi/L	1.3	Moderate
30655	Walton County	2.7 pCi/L	1.4	Moderate

Georgia radon questions

Is radon high in Georgia?: Georgia's population-weighted predicted basement average is 1.9 pCi/L, close to the US average of 1.8. 0 of its 159 modeled counties are predicted at or above the EPA action level of 4 pCi/L, 44 are in the 2-4 "consider fixing" range and 115 are below 2. 0% of Georgia ZIP codes are predicted at 4 or higher.
Which Georgia county has the highest radon?: Walton County has the highest predicted basement average in Georgia at 2.8 pCi/L (EPA Zone 2). The lowest is Lanier County at 1.3 pCi/L. These are area figures; individual homes in any county can test far higher.
How many EPA Zone 1 counties are in Georgia?: 4 of Georgia's 159 counties (3%) are EPA Zone 1 (highest potential), 55 are Zone 2 and 100 are Zone 3. The EPA zone map dates from 1993; the predicted values on this page come from a 2001-2021 model built on millions of actual tests, so the two can disagree for a given county.
Should I test for radon in Georgia?: Yes. Even though Georgia's predicted average is below 2 pCi/L, the EPA recommends every home be tested - radon varies house to house, and 29.1% of Georgia ZIP codes are still predicted at 2 pCi/L or higher.

Georgia radon program

State programs keep lists of certified testers and mitigators and sometimes run kit programs. We link only pages we could verify, and Georgia's program page did not respond when we checked, so start from the EPA state radon contacts page. Then read how to test and what mitigation costs.