Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Clayton County, Georgia
EPA puts Clayton County in Zone 2, its middle radon zone, and 20.1% of its 154 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
20.1%
4.7 pts below GA
- Clayton
- 20.1%
- Georgia
- 24.8%
154 tests, 2008 to 2017
Median result
1.6pCi/L
Below action level
- Clayton
- 1.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
154
27th of 57 by tests
- Clayton
- 154
- Fulton
- 4,858
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Georgia
38 of 57
Middle half
- Clayton
- 20.1%
- Barrow
- 48.3%
By share, of 57 with 30+ tests
Read a result for Clayton County
Starts at Clayton County's median, 1.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.6 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Clayton County's median reported result, 2008 to 2017.
The data
Clayton County, At a glance
Clayton County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Clayton County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Clayton County, 2008 to 2017, laboratory
Under 2 pCi/L: 56%2 to 4 pCi/L: 24%4 pCi/L and above: 20%
Of 154 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 86 | 55.8% |
| 2 to 4 pCi/L | 37 | 24.0% |
| 4 pCi/L and above | 31 | 20.1% |
What these figures count
These are the 154 tests reported to CDC for Clayton County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Clayton County, Compared
Clayton County radon figures, compared
Calculated by Radon411Clayton County's 154 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.6 pCi/L and a maximum of 14.9 pCi/L, and 20.1% reached 4 pCi/L. Georgia as a whole (129 Georgia counties, pooled) comes to 24.8%: 4.7 points higher than here.
Among its state's counties it ranks 38th of 57 Georgia counties with 30 or more tests for the same period. Statewide for the same period, Barrow County reported the highest share (48.3%) and Richmond County the lowest (0.0%).
Below the action level, 86 tests (55.8%) came in under 2 pCi/L, against 44.0% statewide, and 37 tests (24.0%) fell between 2 and 4, against 31.2% statewide. CDC's ten-year totals for Clayton County went from 142 tests (2005 to 2014) to 154 (2008 to 2017), the share going from 22.5% to 20.1%.
EPA's 1993 zone map puts Clayton County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Next door, the shares run from 18.0% in DeKalb County to 33.6% in Spalding County, with DeKalb County below Clayton County.
CDC also counts 18 tests taken after mitigation in Clayton County for the same period: tests in homes where a fix was already in.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Clayton County, Geology
The ground under Clayton County
PredictedUSGS's geologic map puts all of Clayton County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (South), to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Georgiabama Thrust Stack (South) | Schist, amphibolite and granite. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Clayton County beside the ground around it
Clayton County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 5 counties that border it, none has as large a share of moderate-potential ground; DeKalb County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Clayton County, Local resources
Radon testing and mitigation in Clayton County
- Georgia's radon programGeorgia Attorney General's Consumer Protection DivisionGeorgia's radon program does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Georgia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
- Compare kits
- Professionals in Georgia3 professionals are listed in Georgia.
What Georgia's program says
- Licensing of radon professionals
There are no laws mandating a mitigator receive certification in Georgia, however, many mitigators choose to get certified by one of two national programs.
What it means
Clayton County, Questions
Questions about radon in Clayton County
Are radon levels high in Clayton County?
Over the 2008 to 2017 laboratory totals, 20.1% of the radon tests reported to CDC for Clayton County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 37 reported a higher share; pooled, the state comes to 24.8%.
Which counties border Clayton County?
Clayton County borders 5 counties: Fayette County, Henry County, Spalding County, DeKalb County and Fulton County.
Products
Clayton County, Products
Testing a home in Clayton County
In Clayton County, 20.1% of 154 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Clayton County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoQube Flex battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 15 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Clayton County, Bordering counties
Counties bordering Clayton County
Calculated by Radon411- Radon levels in Spalding CountyEPA zone 2
33.6%at or above 4 pCi/L
Median 2.9 pCi/L · 107 tests · 13.5 points above Clayton County
- Radon levels in Fayette CountyEPA zone 2
30.5%at or above 4 pCi/L
Median 2.6 pCi/L · 873 tests · 10.4 points above Clayton County
- Radon levels in Henry CountyEPA zone 2
22.7%at or above 4 pCi/L
Median 2.1 pCi/L · 384 tests · 2.6 points above Clayton County
- Radon levels in Fulton CountyEPA zone 1
20.8%at or above 4 pCi/L
Median 2.2 pCi/L · 4,858 tests · 0.7 points above Clayton County
- Radon levels in DeKalb CountyEPA zone 1
18.0%at or above 4 pCi/L
Median 1.8 pCi/L · 3,475 tests · 2.1 points below Clayton County
Clayton County, Cities and towns
Cities and towns in Clayton County
About 297,471 people live in Clayton County by the Census Bureau's estimate for July 1, 2025, 1,874 fewer than in 2020 (−0.6%). Packed into its land, that is 2,100 people per square mile. No town dominates: Forest Park, the largest, has 19,168 residents, 6.4% of the total. Reported testing is thin here: 154 tests over 2008 to 2017, or 0.5 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Forest Park to Lake City, CDC publishes no figure by town: each reads Clayton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Forest Park | 19,168 | −3.1% | 6.4% |
| Riverdale | 14,637 | −2.5% | 4.9% |
| College Parkextends beyond Clayton County | 13,887 | −0.1% | Counted whole |
| Lovejoy | 12,929 | +28.1% | 4.3% |
| Morrow | 6,211 | −4.8% | 2.1% |
| Jonesboro | 6,046 | +1.5% | 2.0% |
| Lake City | 2,866 | −3.0% | 1.0% |
7 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Clayton County is counted whole, so it has no share.
Clayton County, Homes
Homes in Clayton County
Of Clayton County's 114,818 homes, 65% are detached houses, against 66% across Georgia; 22% are in buildings of five or more homes. Half of its homes were built before 1988, close to Georgia's 1991: 7% date from before 1960 and 30% from 2000 or later. 53% of occupied homes are lived in by their owner (Georgia: 65%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Clayton County | Georgia |
|---|---|---|
| Housing units | 114,818 | 4,483,873 |
| Detached houses | 65% | 66% |
| In buildings of 5 or more | 22% | 16% |
| Mobile homes | 3% | 8% |
| Built before 1960 | 7% | 12% |
| Built since 2000 | 30% | 33% |
| Middle year built | 1988 | 1991 |
| Owner-occupied | 53% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.