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 Walker County, Alabama
EPA puts Walker County in Zone 2, its middle radon zone, and only 15 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
13.6%
Blount County
- Blount
- 13.6%
- Tuscaloosa
- 8.5%
4 of 7 neighbours have 30+ tests, 2008 to 2017
Nearest county
10.7%
Jefferson County, 29 miles
- Jefferson
- 10.7%
- Alabama
- 21.9%
Share at 4+ pCi/L, 912 tests, 2008 to 2017
Ground above low
100.0%
35.3 pts above Alabama
- Walker
- 100.0%
- Alabama
- 64.7%
Share of land USGS rates moderate or high potential
Tests reported
17
Too few for a share
- Walker
- 17
- Needed
- 30
2006 to 2015, 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 Walker 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
Walker County, At a glance
Walker County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Walker 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 Walker County, 2008 to 2017, laboratory
CDC holds 15 reported tests for Walker County over the 2008 to 2017 laboratory totals, with a median of 1.4 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Walker County beside the counties around it is how this page reads it.
What these figures count
Only 15 tests were reported to CDC for Walker 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).
Walker County, Compared
Walker County radon figures, compared
Calculated by Radon411CDC's largest figure for Walker County rests on 17 tests over the 2006 to 2015 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 5.9 points and no rank or comparison is drawn from it. Results reached as high as 5.5 pCi/L, with a middle value of 1.4 pCi/L.
Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Blount County reported the largest share at or above 4 pCi/L, 13.6%, and Tuscaloosa County the smallest, 8.5%, with Cullman County at 11.4% and Jefferson County at 10.7% between. Farther out, Lawrence County (50 miles away) at 16.2%, Morgan County (52 miles away) at 14.6% and Shelby County (52 miles away) at 11.3% 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 Walker 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.
Walker County, Geology
The ground under Walker County
PredictedUSGS's geologic map puts all of Walker County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Appalachian Plateau, 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 |
|---|---|---|---|---|
| Appalachian Plateau | Limestone, sandstone, carbonaceous shale, coal | 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.
Walker County beside the ground around it
Across Alabama 14.3% of the land is rated high; none of Walker County's is. Of the 7 counties that border it, none has as large a share of moderate-potential ground; Blount County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Walker County, Local resources
Radon testing and mitigation in Walker 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
Walker County, Questions
Questions about radon in Walker County
Are radon levels high in Walker County?
Over the 2008 to 2017 laboratory totals, 33.3% of the radon tests reported to CDC for Walker County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Blount County reported the largest share at or above 4 pCi/L, 13.6%, and Tuscaloosa County the smallest, 8.5%, with Cullman County at 11.4% and Jefferson County at 10.7% between.
Which counties border Walker County?
Walker County borders 7 counties: Fayette County, Jefferson County, Winston County, Tuscaloosa County, Cullman County, Blount County and Marion County.
Products
Walker County, Products
Testing a home in Walker County
No CDC figure names Walker County; the nearest county with one, Jefferson County (29 miles away), reported 10.7% 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 Walker County; a long-term test tells the year-round average.
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
Wave Radon battery smart radon 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
Walker County, Bordering counties
Counties bordering Walker County
Calculated by Radon411- Radon levels in Winston CountyEPA zone 2
16.7%at or above 4 pCi/L
Median 1.6 pCi/L · 12 tests
- Radon levels in Blount CountyEPA zone 2
13.6%at or above 4 pCi/L
Median 2.0 pCi/L · 44 tests
- Radon levels in Cullman CountyEPA zone 2
11.4%at or above 4 pCi/L
Median 1.5 pCi/L · 79 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 Marion CountyEPA zone 2
8.0%at or above 4 pCi/L
Median 1.0 pCi/L · 25 tests
- Radon levels in Fayette CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 2 tests
Walker County, Cities and towns
Cities and towns in Walker County
Walker County's population has barely moved since 2020: 65,140 residents on July 1, 2025 against 65,147 then, by the Census Bureau's estimates. That works out to 82 people per square mile of land. Its largest town, Jasper, has 14,585 residents, 22.4% of the total. Reported testing is thin here: 17 tests over 2006 to 2015, or 0.3 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.6.
From Jasper to Eldridge, CDC publishes no figure by town: each reads Walker County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Jasper | 14,585 | +0.2% | 22.4% |
| Sumitonextends beyond Walker County | 2,511 | −2.0% | Counted whole |
| Dora | 2,223 | −1.8% | 3.4% |
| Carbon Hill | 1,723 | −2.2% | 2.6% |
| Cordova | 1,679 | −3.1% | 2.6% |
| Parrish | 977 | −0.7% | 1.5% |
| Oakman | 752 | −1.8% | 1.2% |
| Sipsey | 362 | −1.4% | 0.6% |
| Kansas | 185 | +2.8% | 0.3% |
| Nauvooextends beyond Walker County | 183 | +1.7% | Counted whole |
| Eldridge | 134 | −2.9% | 0.2% |
11 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 Walker County is counted whole, so it has no share.
Walker County, Homes
Homes in Walker County
Of Walker County's 30,230 homes, 64% are detached houses, against 69% across Alabama; 28% are mobile homes. Half of its homes were built before 1982, close to Alabama's 1985: 19% date from before 1960 and 21% 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 | Walker County | Alabama |
|---|---|---|
| Housing units | 30,230 | 2,316,192 |
| Detached houses | 64% | 69% |
| In buildings of 5 or more | 4% | 12% |
| Mobile homes | 28% | 13% |
| Built before 1960 | 19% | 16% |
| Built since 2000 | 21% | 27% |
| Middle year built | 1982 | 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.