Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Bibb County, Georgia
EPA puts Bibb County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 1.0% of 99 (2008 to 2017, laboratory totals) reached 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
1.0%
23.8 pts below GA
- Bibb
- 1.0%
- Georgia
- 24.8%
99 tests, 2008 to 2017
Median result
0.9pCi/L
Below action level
- Bibb
- 0.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
99
39th of 57 by tests
- Bibb
- 99
- Fulton
- 4,858
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Georgia
55 of 57
Lowest quarter
- Bibb
- 1.0%
- Barrow
- 48.3%
By share, of 57 with 30+ tests
Read a result for Bibb County
Starts at Bibb County's median, 0.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.9 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. Bibb County's median reported result, 2008 to 2017.
The data
Bibb County, At a glance
Bibb County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bibb County, 2008 to 2017, laboratory
Under 2 pCi/L: 85%2 to 4 pCi/L: 14%4 pCi/L and above: 1%
Of 99 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 84 | 84.8% |
| 2 to 4 pCi/L | 14 | 14.1% |
| 4 pCi/L and above | 1 | 1.0% |
What these figures count
These are the 99 tests reported to CDC for Bibb 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).
Bibb County, Compared
Bibb County radon figures, compared
Calculated by Radon411Only 1 of 99 radon tests reported for Bibb County over the 2008 to 2017 laboratory totals reached 4 pCi/L (1.0%). The median result, 0.9 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 4.2 pCi/L.
Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Bibb County runs 23.8 points below its state. Against the national pool of 35.7%, the gap is 34.7 points lower. Its place in the state: 55th of 57 Georgia counties with 30 or more tests for the same period.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 1.0% share point the same way here. Of 3 neighbours with a figure, all 3 reported a larger share at or above 4 pCi/L; the spread is 11.3% (Houston County) to 29.0% (Jones County).
Below the action level, 84 tests (84.8%) came in under 2 pCi/L, against 44.0% statewide, and 14 tests (14.1%) fell between 2 and 4, against 31.2% statewide. USGS geology rates 100% of the county's land low radon potential.
CDC's ten-year totals for Bibb County went from 72 tests (2005 to 2014) to 99 (2008 to 2017), the share going from 0.0% to 1.0%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bibb County, Geology
The ground under Bibb County
PredictedUSGS's geologic map puts all of Bibb County's mapped land in one class: low radon potential. The map puts 65.9% of Bibb County in the area it calls Coastal Plain and 34.1% in Little River Thrust Stack. USGS gives the first a radon index of 8 and the second 7, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Cretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon. | Low | 8 | 65.9% |
| Little River Thrust Stack | Biotite and amphibolite gneiss, granite gneiss, mica schist. | Low | 7 | 34.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bibb County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Bibb County's is. Of the 5 counties that border it, 2 have more moderate-potential ground, Monroe County the most at 59.6%.
The map rates the ground, not the air in any home.
Local help
Bibb County, Local resources
Radon testing and mitigation in Bibb 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
Bibb County, Questions
Questions about radon in Bibb County
Are radon levels high in Bibb County?
Over the 2008 to 2017 laboratory totals, 1.0% of the radon tests reported to CDC for Bibb County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.9 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 54 reported a higher share; pooled, the state comes to 24.8%.
Which counties border Bibb County?
Bibb County borders 5 counties: Twiggs County, Jones County, Crawford County, Monroe County and Houston County.
Products
Bibb County, Products
Testing a home in Bibb County
In Bibb County, 1.0% of 99 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Bibb County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Bibb County, Bordering counties
Counties bordering Bibb County
Calculated by Radon411- Radon levels in Twiggs CountyEPA zone 3
50.0%at or above 4 pCi/L
Median 2.4 pCi/L · 2 tests · 49.0 points above Bibb County
- Radon levels in Crawford CountyEPA zone 3
50.0%at or above 4 pCi/L
Median 2.2 pCi/L · 2 tests · 49.0 points above Bibb County
- Radon levels in Jones CountyEPA zone 3
29.0%at or above 4 pCi/L
Median 2.2 pCi/L · 31 tests · 28.0 points above Bibb County
- Radon levels in Monroe CountyEPA zone 2
23.0%at or above 4 pCi/L
Median 1.6 pCi/L · 248 tests · 22.0 points above Bibb County
- Radon levels in Houston CountyEPA zone 3
11.3%at or above 4 pCi/L
Median 1.4 pCi/L · 62 tests · 10.3 points above Bibb County
Bibb County, Cities and towns
Cities and towns in Bibb County
Bibb County's population has barely moved since 2020: 157,556 residents on July 1, 2025 against 157,054 then, by the Census Bureau's estimates. That works out to 632 people per square mile of land. Macon-Bibb County, its one incorporated place, has 157,556 residents, 100.0% of the total. Reported testing is thin here: 99 tests over 2008 to 2017, or 0.6 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
Macon-Bibb County is the one incorporated place here; CDC publishes no figure by town, so it reads Bibb County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Macon-Bibb County | 157,556 | +0.3% | 100.0% |
One incorporated place, 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).
Bibb County, Homes
Homes in Bibb County
Of Bibb County's 71,869 homes, 65% are detached houses, against 66% across Georgia; 19% are in buildings of five or more homes. The homes are older than Georgia's as a whole: half were built before 1976 (1991 for Georgia), and 27% date from before 1960. 52% 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 | Bibb County | Georgia |
|---|---|---|
| Housing units | 71,869 | 4,483,873 |
| Detached houses | 65% | 66% |
| In buildings of 5 or more | 19% | 16% |
| Mobile homes | 3% | 8% |
| Built before 1960 | 27% | 12% |
| Built since 2000 | 19% | 33% |
| Middle year built | 1976 | 1991 |
| Owner-occupied | 52% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.