Radon levels in Atlanta, Georgia
LowEPA Zone 1Predicted long-term basement average of 1.9 pCi/L (model estimate) across the 21 modeled ZIP codes in Atlanta - close to the US average of 1.8, close to the Georgia average of 1.9. Ranked #11 of 21 Georgia cities on this site. Most of the city lies in Fulton County (its ZIPs also reach into 1 other county).
Test Atlanta, GA 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.
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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.
1.9 ± 0.06
pCi/L predicted basement mean (model SD)
1.1 ± 0.09
pCi/L predicted upstairs (above-ground) mean
1.7-2.1
range of ZIP-level basement predictions in the city
0%
of Atlanta ZIPs predicted ≥ 4 pCi/L (10% ≥ 2)
What this means for Atlanta
The typical Atlanta home is predicted below 2 pCi/L, the lowest band. That describes the average house; the ZIP-level predictions inside the city still span 1.7 to 2.1 pCi/L.
The city figure is not a separate estimate: it is the mean of the model's ZIP-code predictions, weighted by the share of the city's land in each ZIP (Census 2020 ZCTA-to-place relationship file). Note that the EPA classifies Fulton County as Zone 1 while the newer model predicts 1.9 pCi/L for Atlanta; where they disagree, we grade on the model but show both.
Comparable Georgia cities: Alpharetta (1.9), Roswell (1.9), Johns Creek (1.9), Dunwoody (1.9).
ZIP codes in Atlanta
ZIPs that overlap the city, largest share of its land first. Predicted basement and upstairs means are model estimates; ZIPs the model does not cover show a dash.
| ZIP | Share of city | Basement | Upstairs | Grade |
|---|---|---|---|---|
| 30318 | 15% | 1.9 ± 0.05 | 1.3 | Low |
| 30331 | 14% | 2.0 ± 0.05 | 1.2 | Low |
| 30311 | 9% | 1.9 ± 0.05 | 1.2 | Low |
| 30315 | 9% | 1.8 ± 0.06 | 0.9 | Low |
| 30327 | 8% | 2.1 ± 0.05 | 1.2 | Moderate |
| 30310 | 6% | 1.7 ± 0.07 | 0.6 | Low |
| 30354 | 5% | 1.7 ± 0.06 | 1.1 | Low |
| 30305 | 5% | 1.8 ± 0.05 | 1.2 | Low |
| 30314 | 3% | 1.7 ± 0.06 | 0.8 | Low |
| 30342 | 3% | 2.1 ± 0.06 | 1.3 | Moderate |
| 30324 | 3% | 1.8 ± 0.05 | 1.2 | Low |
| 30316 | 3% | 1.7 ± 0.08 | 1.0 | Low |
| 30306 | 3% | 1.9 ± 0.07 | 1.3 | Low |
| 30309 | 3% | 1.7 ± 0.06 | 1.1 | Low |
| 30312 | 3% | 1.7 ± 0.06 | 1.0 | Low |
| 30317 | 2% | 1.8 ± 0.06 | 1.0 | Low |
| 30307 | 2% | 1.8 ± 0.06 | 1.1 | Low |
| 30308 | 1% | 1.7 ± 0.06 | 1.0 | Low |
| 30313 | 1% | 1.7 ± 0.06 | 0.9 | Low |
| 30303 | 1% | 1.7 ± 0.07 | 0.9 | Low |
| 30326 | 1% | 1.7 ± 0.06 | 1.0 | Low |
| 30322 | <1% | — | — | no model |
| 30363 | <1% | — | — | no model |
| 30332 | <1% | — | — | no model |
| 30334 | <1% | — | — | no model |
Testing help in Georgia
We link only state program pages we could verify, and Georgia's did not respond when we checked, so start from the EPA state radon contacts page. If a test comes back at 4 pCi/L or higher, mitigation typically costs $800-$2,500 installed; use EPA find-a-professional and read the mitigation guide.
Atlanta radon questions
- Is radon high in Atlanta, Georgia?
- Low. Averaging the model's ZIP-code predictions across Atlanta (weighted by how much of the city each ZIP covers) gives a long-term basement mean of 1.9 pCi/L - close to the US average of 1.8 and close to the Georgia average of 1.9. That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Atlanta ranks 11 of 21 Georgia cities on this site.
- Which Atlanta ZIP codes have the highest radon?
- Predictions for the 21 modeled ZIP codes in Atlanta range from 1.7 to 2.1 pCi/L in the basement. 0% of them are predicted at or above 4 pCi/L and 10% at or above 2. The city is fairly uniform, so the city-wide number is a reasonable guide for any neighborhood.
- Should I test for radon in Atlanta?
- Yes, once. The EPA recommends testing every home regardless of area. A short-term kit costs little and settles the question for your house; Atlanta's low predicted average describes the typical home, not yours.
- What does EPA Radon Zone 1 mean for Atlanta?
- Atlanta sits mainly in Fulton County, which the EPA classifies as Zone 1 - highest potential (predicted average > 4 pCi/L). The zone map dates from 1993 and covers whole counties. The newer model's city average of 1.9 pCi/L does not line up with Zone 1, which is common - the EPA itself says high-radon homes exist in every zone. Neither replaces a test of your own home.
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