Georgia Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Georgia, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Grayson has the highest measured indoor radon in Georgia at 6.1 pCi/L, based on Airthings measurements across 122 cities.
Updated October 19, 2026
Highest city
6.1pCi/L
Grayson
Georgia city average
2.6pCi/L
across 122 cities
Above action level
10/ 122
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Grayson | 6.1 pCi/L | 1.5× over |
| 2 | Winder | 5.1 pCi/L | 1.3× over |
| 3 | Cleveland | 5.1 pCi/L | 1.3× over |
| 4 | Clarkesville | 5.1 pCi/L | 1.3× over |
| 5 | Statham | 4.8 pCi/L | 1.2× over |
| 6 | Blue Ridge | 4.5 pCi/L | 1.1× over |
| 7 | Lakeview Estates | 4.5 pCi/L | 1.1× over |
| 8 | Walnut Grove | 4.4 pCi/L | 1.1× over |
| 9 | McCaysville | 4.3 pCi/L | 1.1× over |
| 10 | Loganville | 4.0 pCi/L | 1.0× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 11 | Russell | 4.0 pCi/L | 1.0× under |
| 12 | Gainesville | 4.0 pCi/L | 1.0× under |
| 13 | Jefferson | 3.8 pCi/L | 1.0× under |
| 14 | Braselton | 3.8 pCi/L | 1.0× under |
| 15 | Jasper | 3.8 pCi/L | 0.9× under |
| 16 | Dalton | 3.7 pCi/L | 0.9× under |
| 17 | Rydal | 3.7 pCi/L | 0.9× under |
| 18 | Emerson | 3.7 pCi/L | 0.9× under |
| 19 | Stone Mountain | 3.6 pCi/L | 0.9× under |
| 20 | Tucker | 3.6 pCi/L | 0.9× under |
| 21 | Senoia | 3.5 pCi/L | 0.9× under |
| 22 | Pine Mountain | 3.5 pCi/L | 0.9× under |
| 23 | Flowery Branch | 3.5 pCi/L | 0.9× under |
| 24 | Villa Rica | 3.5 pCi/L | 0.9× under |
| 25 | Bogart | 3.5 pCi/L | 0.9× under |
| 26 | Monroe | 3.4 pCi/L | 0.9× under |
| 27 | Snellville | 3.3 pCi/L | 0.8× under |
| 28 | Blairsville | 3.3 pCi/L | 0.8× under |
| 29 | Dacula | 3.3 pCi/L | 0.8× under |
| 30 | East Point | 3.3 pCi/L | 0.8× under |
| 31 | Stockbridge | 3.2 pCi/L | 0.8× under |
| 32 | Buford | 3.2 pCi/L | 0.8× under |
| 33 | Oxford | 3.2 pCi/L | 0.8× under |
| 34 | Cedartown | 3.2 pCi/L | 0.8× under |
| 35 | Hoschton | 3.2 pCi/L | 0.8× under |
| 36 | Ball Ground | 3.0 pCi/L | 0.7× under |
| 37 | Oakwood | 3.0 pCi/L | 0.7× under |
| 38 | Auburn | 2.9 pCi/L | 0.7× under |
| 39 | Canton | 2.9 pCi/L | 0.7× under |
| 40 | Lithia Springs | 2.9 pCi/L | 0.7× under |
| 41 | Temple | 2.9 pCi/L | 0.7× under |
| 42 | Rome | 2.9 pCi/L | 0.7× under |
| 43 | Palmetto | 2.7 pCi/L | 0.7× under |
| 44 | Mountain City | 2.6 pCi/L | 0.7× under |
| 45 | Dahlonega | 2.6 pCi/L | 0.7× under |
| 46 | Chamblee | 2.5 pCi/L | 0.6× under |
| 47 | Lawrenceville | 2.5 pCi/L | 0.6× under |
| 48 | Winterville | 2.5 pCi/L | 0.6× under |
| 49 | Peachtree City | 2.5 pCi/L | 0.6× under |
| 50 | Union City | 2.5 pCi/L | 0.6× under |
| 51 | Mountain Park | 2.5 pCi/L | 0.6× under |
| 52 | Cartersville | 2.5 pCi/L | 0.6× under |
| 53 | Lovejoy | 2.5 pCi/L | 0.6× under |
| 54 | Carrollton | 2.4 pCi/L | 0.6× under |
| 55 | North Atlanta | 2.4 pCi/L | 0.6× under |
| 56 | Country Club Estates | 2.4 pCi/L | 0.6× under |
| 57 | Belvedere Park | 2.4 pCi/L | 0.6× under |
| 58 | Conyers | 2.4 pCi/L | 0.6× under |
| 59 | Sandy Springs | 2.4 pCi/L | 0.6× under |
| 60 | Social Circle | 2.4 pCi/L | 0.6× under |
| 61 | Tyrone | 2.4 pCi/L | 0.6× under |
| 62 | Doraville | 2.3 pCi/L | 0.6× under |
| 63 | Vinings | 2.3 pCi/L | 0.6× under |
| 64 | Athens | 2.3 pCi/L | 0.6× under |
| 65 | Newnan | 2.3 pCi/L | 0.6× under |
| 66 | Holly Springs | 2.3 pCi/L | 0.6× under |
| 67 | Dawsonville | 2.2 pCi/L | 0.6× under |
| 68 | Clayton | 2.2 pCi/L | 0.6× under |
| 69 | Nelson | 2.2 pCi/L | 0.6× under |
| 70 | West Point | 2.2 pCi/L | 0.6× under |
| 71 | Milton | 2.2 pCi/L | 0.6× under |
| 72 | Powder Springs | 2.2 pCi/L | 0.5× under |
| 73 | Lilburn | 2.2 pCi/L | 0.5× under |
| 74 | Fair Oaks | 2.1 pCi/L | 0.5× under |
| 75 | Dallas | 2.1 pCi/L | 0.5× under |
| 76 | Ellijay | 2.1 pCi/L | 0.5× under |
| 77 | Acworth | 2.1 pCi/L | 0.5× under |
| 78 | Chattahoochee Hills | 2.1 pCi/L | 0.5× under |
| 79 | Roswell | 2.1 pCi/L | 0.5× under |
| 80 | Dunwoody | 2.1 pCi/L | 0.5× under |
| 81 | Cumming | 2.0 pCi/L | 0.5× under |
| 82 | Greensboro | 2.0 pCi/L | 0.5× under |
| 83 | Berkeley Lake | 2.0 pCi/L | 0.5× under |
| 84 | North Druid Hills | 2.0 pCi/L | 0.5× under |
| 85 | Helena | 2.0 pCi/L | 0.5× under |
| 86 | Avondale Estates | 2.0 pCi/L | 0.5× under |
| 87 | Watkinsville | 2.0 pCi/L | 0.5× under |
| 88 | Fayetteville | 1.9 pCi/L | 0.5× under |
| 89 | Douglasville | 1.9 pCi/L | 0.5× under |
| 90 | Gresham Park | 1.9 pCi/L | 0.5× under |
| 91 | Evans | 1.9 pCi/L | 0.5× under |
| 92 | Mableton | 1.9 pCi/L | 0.5× under |
| 93 | Druid Hills | 1.9 pCi/L | 0.5× under |
| 94 | Riverdale | 1.9 pCi/L | 0.5× under |
| 95 | Suwanee | 1.9 pCi/L | 0.5× under |
| 96 | Johns Creek | 1.8 pCi/L | 0.5× under |
| 97 | Woodstock | 1.8 pCi/L | 0.5× under |
| 98 | Smyrna | 1.8 pCi/L | 0.4× under |
| 99 | Clarkston | 1.8 pCi/L | 0.4× under |
| 100 | Norcross | 1.8 pCi/L | 0.4× under |
| 101 | Hiram | 1.7 pCi/L | 0.4× under |
| 102 | Atlanta | 1.7 pCi/L | 0.4× under |
| 103 | North Decatur | 1.7 pCi/L | 0.4× under |
| 104 | Marietta | 1.7 pCi/L | 0.4× under |
| 105 | Decatur | 1.6 pCi/L | 0.4× under |
| 106 | Hiawassee | 1.6 pCi/L | 0.4× under |
| 107 | Shannon | 1.5 pCi/L | 0.4× under |
| 108 | Hartwell | 1.5 pCi/L | 0.4× under |
| 109 | Reed Creek | 1.5 pCi/L | 0.4× under |
| 110 | Duluth | 1.4 pCi/L | 0.4× under |
| 111 | Hamilton | 1.4 pCi/L | 0.3× under |
| 112 | Scottdale | 1.3 pCi/L | 0.3× under |
| 113 | McDonough | 1.3 pCi/L | 0.3× under |
| 114 | East Newnan | 1.3 pCi/L | 0.3× under |
| 115 | Kennesaw | 1.2 pCi/L | 0.3× under |
| 116 | Sugar Hill | 1.2 pCi/L | 0.3× under |
| 117 | Macon | 1.2 pCi/L | 0.3× under |
| 118 | Martinez | 1.2 pCi/L | 0.3× under |
| 119 | Alpharetta | 1.1 pCi/L | 0.3× under |
| 120 | Fairburn | 1.1 pCi/L | 0.3× under |
| 121 | Centerville | 1.0 pCi/L | 0.2× under |
| 122 | Grovetown | 0.8 pCi/L | 0.2× under |