Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Bibb County, Alabama
EPA puts Bibb County in Zone 2, its middle radon zone, and only 4 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
11.3%
Shelby County
- Shelby
- 11.3%
- Tuscaloosa
- 8.5%
3 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
8.5%
Tuscaloosa County, 31 miles
- Tuscaloosa
- 8.5%
- Alabama
- 21.9%
Share at 4+ pCi/L, 82 tests, 2008 to 2017
Ground above low
100.0%
35.3 pts above Alabama
- Bibb
- 100.0%
- Alabama
- 64.7%
Share of land USGS rates moderate or high potential
Tests reported
4
Too few for a share
- Bibb
- 4
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Bibb County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.
The data
Bibb County, At a glance
Bibb County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Bibb 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 Bibb County, 2008 to 2017, laboratory
CDC holds 4 reported tests for Bibb County over the 2008 to 2017 laboratory totals, with a median of 2.5 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Bibb County beside the counties around it is how this page reads it.
What these figures count
Only 4 tests were reported to CDC for Bibb County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor 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 Radon411CDC's largest figure for Bibb County rests on 4 tests over the 2008 to 2017 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 25.0 points and no rank or comparison is drawn from it. Results reached as high as 7.8 pCi/L, with a middle value of 2.5 pCi/L.
Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Shelby County reported the largest share at or above 4 pCi/L, 11.3%, and Tuscaloosa County the smallest, 8.5%, with Jefferson County at 10.7% between. Farther out, Autauga County (43 miles away) at 17.1%, Talladega County (62 miles away) at 18.5% and Elmore County (63 miles away) at 22.2% have figures too. Pooled across 65 Alabama counties, 21.9% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Colbert County reported the highest share (36.2%) and Baldwin County the lowest (0.0%). EPA's 1993 map puts Bibb County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
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: moderate radon potential. The map puts 55.2% of Bibb County in the area it calls Inner Coastal Plain and 44.8% in Valley and Ridge. USGS gives the first a radon index of 10 and the second 9, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Coastal Plain | Marly sandy clay, chalk, and glauconitic sands. | Moderate | 10 | 55.2% |
| Valley and Ridge | Chattanooga black shale, Cambrian-Ordovician limestone and sandstone. | Moderate | 9 | 44.8% |
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 Alabama 14.3% of the land is rated high; none of Bibb County's is. Of the 6 counties that border it, 2 have more high-potential ground, Chilton County the most at 36.7%.
The map rates the ground, not the air in any home.
Local help
Bibb County, Local resources
Radon testing and mitigation in Bibb County
- Alabama Radon ProgramAlabama Radon Program, run by Alabama Department of Public Health, answers questions about testing, mitigation and the rules in Alabama.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- See the Alabama directoryNo professionals are listed in Alabama yet. The state program can point you to registered testers and mitigators.
What Alabama's program says
- Phone
- (334) 290-6244
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, 25.0% of the radon tests reported to CDC for Bibb County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Shelby County reported the largest share at or above 4 pCi/L, 11.3%, and Tuscaloosa County the smallest, 8.5%, with Jefferson County at 10.7% between.
Which counties border Bibb County?
Bibb County borders 6 counties: Chilton County, Tuscaloosa County, Shelby County, Perry County, Jefferson County and Hale County.
Products
Bibb County, Products
Testing a home in Bibb County
No CDC figure names Bibb County; the nearest county with one, Tuscaloosa County (31 miles away), reported 8.5% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Bibb 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
Wave Plus battery radon and air quality monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- App only
Method: Alpha spectrometry
- 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 Hale CountyEPA zone 2
50.0%at or above 4 pCi/L
Median 3.9 pCi/L · 10 tests
- Radon levels in Shelby CountyEPA zone 2
11.3%at or above 4 pCi/L
Median 1.3 pCi/L · 373 tests
- Radon levels in Chilton CountyEPA zone 2
11.1%at or above 4 pCi/L
Median 1.1 pCi/L · 18 tests
- Radon levels in Jefferson CountyEPA zone 2
10.7%at or above 4 pCi/L
Median 1.2 pCi/L · 912 tests
- Radon levels in Tuscaloosa CountyEPA zone 2
8.5%at or above 4 pCi/L
Median 1.4 pCi/L · 82 tests
- Radon levels in Perry CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 3.2 pCi/L · 1 test
Bibb County, Cities and towns
Cities and towns in Bibb County
Bibb County's population has barely moved since 2020: 22,262 residents on July 1, 2025 against 22,181 then, by the Census Bureau's estimates. That works out to 36 people per square mile of land. No town dominates: Brent, the largest, has 4,414 residents, 19.8% of the total. Reported testing is thin here: 4 tests over 2008 to 2017, or 0.2 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.
From Brent to West Blocton, CDC publishes no figure by town: each reads Bibb County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Brent | 4,414 | −0.2% | 19.8% |
| Centreville | 2,709 | −2.8% | 12.2% |
| Vanceextends beyond Bibb County | 2,332 | +9.4% | Counted whole |
| Woodstockextends beyond Bibb County | 1,653 | +10.2% | Counted whole |
| West Blocton | 1,194 | −1.4% | 5.4% |
5 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 Bibb County is counted whole, so it has no share.
Bibb County, Homes
Homes in Bibb County
Of Bibb County's 9,090 homes, 60% are detached houses, against 69% across Alabama; 31% are mobile homes. Half of its homes were built before 1986, close to Alabama's 1985: 17% date from before 1960 and 27% from 2000 or later. Owners live in 77% of the occupied homes (Alabama: 70%), so for most households a test and a fix are their own to order.
| Homes | Bibb County | Alabama |
|---|---|---|
| Housing units | 9,090 | 2,316,192 |
| Detached houses | 60% | 69% |
| In buildings of 5 or more | 5% | 12% |
| Mobile homes | 31% | 13% |
| Built before 1960 | 17% | 16% |
| Built since 2000 | 27% | 27% |
| Middle year built | 1986 | 1985 |
| Owner-occupied | 77% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.