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
Locations and reports
Radon Levels in Franklin County, Alabama
EPA puts Franklin County in Zone 1, its highest radon zone, and 18.1% of its 193 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
18.1%
3.8 pts below AL
- Franklin
- 18.1%
- Alabama
- 21.9%
193 tests, 2008 to 2017
Median result
1.4pCi/L
Below action level
- Franklin
- 1.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
193
11th of 27 by tests
- Franklin
- 193
- Madison
- 5,178
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Alabama
9 of 27
Middle half
- Franklin
- 18.1%
- Colbert
- 36.2%
By share, of 27 with 30+ tests
Read a result for Franklin County
Starts at Franklin County's median, 1.4 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.4 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. Franklin County's median reported result, 2008 to 2017.
The data
Franklin County, At a glance
Franklin County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Franklin County in
USGS geologic potential: Moderate across 51% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Franklin County, 2008 to 2017, laboratory
Under 2 pCi/L: 59%2 to 4 pCi/L: 23%4 pCi/L and above: 18%
Of 193 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 113 | 58.5% |
| 2 to 4 pCi/L | 45 | 23.3% |
| 4 pCi/L and above | 35 | 18.1% |
What these figures count
These are the 193 tests reported to CDC for Franklin 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).
Franklin County, Compared
Franklin County radon figures, compared
Calculated by Radon411Franklin County's 193 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.4 pCi/L and a maximum of 35.0 pCi/L, and 18.1% reached 4 pCi/L. Alabama as a whole (65 Alabama counties, pooled) comes to 21.9%: 3.8 points higher than here.
Among its state's counties it ranks 9th of 27 Alabama counties with 30 or more tests for the same period. Statewide for the same period, Colbert County reported the highest share (36.2%) and Baldwin County the lowest (0.0%).
Below the action level, 113 tests (58.5%) came in under 2 pCi/L, against 54.3% statewide, and 45 tests (23.3%) fell between 2 and 4, against 23.8% statewide. CDC's ten-year totals for Franklin County went from 222 tests (2005 to 2014) to 193 (2008 to 2017), the share going from 17.6% to 18.1%.
EPA's 1993 zone map puts Franklin County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 51% of the county's land moderate radon potential.
Next door, the shares run from 16.2% in Lawrence County to 36.2% in Colbert County, with Lawrence County below Franklin County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Franklin County, Geology
The ground under Franklin County
PredictedUSGS's geologic map splits Franklin County: 50.6% of its land is moderate radon potential and 49.4% high. The map puts 49.4% of Franklin County in the area it calls Interior Low Plateaus and 40.4% in Inner Coastal Plain, with one smaller area beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Interior Low Plateaus | Mississippian carbonate rocks and shales. | High | 12 | 49.4% |
| Inner Coastal Plain | Marly sandy clay, chalk, and glauconitic sands. | Moderate | 10 | 40.4% |
| Appalachian Plateau | Limestone, sandstone, carbonaceous shale, coal | Moderate | 9 | 10.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Franklin County beside the ground around it
Franklin County has more high-potential ground than Alabama as a whole: 49.4% of its land against 14.3%. Of the 6 counties that border it, 2 have more high-potential ground, Colbert County the most at 98.5%.
The map rates the ground, not the air in any home.
Local help
Franklin County, Local resources
Radon testing and mitigation in Franklin 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
Franklin County, Questions
Questions about radon in Franklin County
Are radon levels high in Franklin County?
Over the 2008 to 2017 laboratory totals, 18.1% of the radon tests reported to CDC for Franklin County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 27 Alabama counties with 30 or more tests for the same period, 8 reported a higher share; pooled, the state comes to 21.9%.
Which counties border Franklin County?
Franklin County borders 6 counties: Marion County, AL, Colbert County, AL, Tishomingo County, MS, Lawrence County, AL, Winston County, AL and Itawamba County, MS.
Products
Franklin County, Products
Testing a home in Franklin County
In Franklin County, 18.1% of 193 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 21.9% pooled across Alabama. In Zone 1 the year-round level in Franklin County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
Monitor
RadonEye RD200 plug-in continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Franklin County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Franklin County
Explore
Franklin County, Bordering counties
Counties bordering Franklin County
Calculated by Radon411- Radon levels in Colbert County, ALEPA zone 1
36.2%at or above 4 pCi/L
Median 2.7 pCi/L · 871 tests · 18.1 points above Franklin County
- Radon levels in Winston County, ALEPA zone 2
16.7%at or above 4 pCi/L
Median 1.6 pCi/L · 12 tests · 1.4 points below Franklin County
- Radon levels in Lawrence County, ALEPA zone 1
16.2%at or above 4 pCi/L
Median 1.7 pCi/L · 154 tests · 1.9 points below Franklin County
- Radon levels in Marion County, ALEPA zone 2
8.0%at or above 4 pCi/L
Median 1.0 pCi/L · 25 tests · 10.1 points below Franklin County
- Radon levels in Tishomingo County, MSEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
- Radon levels in Itawamba County, MSEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
Franklin County, Cities and towns
Cities and towns in Franklin County
The Census Bureau estimates 32,449 residents in Franklin County for July 1, 2025, 361 more than in 2020 (+1.1%). That works out to 51 people per square mile of land. Its largest town, Russellville, has 10,904 residents, 33.6% of the total. Together its 5 incorporated places hold 48.4% of those residents; the other 51.6% live outside any of them. Testing is reported here more often than across the state: CDC's 193 reported tests for 2008 to 2017 come to 5.9 for every 1,000 residents (2025 estimate), against 2.4 for Alabama.
From Russellville to Hodges, CDC publishes no figure by town: each reads Franklin County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Russellville | 10,904 | +0.5% | 33.6% |
| Red Bay | 3,196 | −1.1% | 9.8% |
| Phil Campbell | 1,004 | +1.6% | 3.1% |
| Vina | 339 | +3.4% | 1.0% |
| Hodges | 269 | +2.3% | 0.8% |
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).
Franklin County, Homes
Homes in Franklin County
Of Franklin County's 13,965 homes, 74% are detached houses, against 69% across Alabama; 15% are mobile homes. Half of its homes were built before 1983, close to Alabama's 1985: 14% date from before 1960 and 20% from 2000 or later. 72% of occupied homes are lived in by their owner (Alabama: 70%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Franklin County | Alabama |
|---|---|---|
| Housing units | 13,965 | 2,316,192 |
| Detached houses | 74% | 69% |
| In buildings of 5 or more | 6% | 12% |
| Mobile homes | 15% | 13% |
| Built before 1960 | 14% | 16% |
| Built since 2000 | 20% | 27% |
| Middle year built | 1983 | 1985 |
| Owner-occupied | 72% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.