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 Lamar County, Alabama
EPA puts Lamar 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
Nearest county
8.5%
Tuscaloosa County, 47 miles
- Tuscaloosa
- 8.5%
- Alabama
- 21.9%
Share at 4+ pCi/L, 82 tests, 2008 to 2017
Ground above low
99.7%
35.1 pts above Alabama
- Lamar
- 99.7%
- Alabama
- 64.7%
Share of land USGS rates moderate or high potential
Tests reported
4
Too few for a share
- Lamar
- 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 Lamar 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
Lamar County, At a glance
Lamar County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Lamar 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 Lamar County, 2008 to 2017, laboratory
CDC holds 4 reported tests for Lamar County over the 2008 to 2017 laboratory totals, with a median of 7.5 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Lamar County beside the counties around it is how this page reads it.
What these figures count
Only 4 tests were reported to CDC for Lamar 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).
Lamar County, Compared
Lamar County radon figures, compared
Calculated by Radon411CDC's largest figure for Lamar County rests on 4 tests over the 2008 to 2017 laboratory totals, 3 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 10.1 pCi/L, with a middle value of 7.5 pCi/L.
The nearest counties with a figure are Tuscaloosa County (47 miles away) at 8.5%, Franklin County (48 miles away) at 18.1% and Colbert County (66 miles away) at 36.2%. 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 Lamar 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.
Lamar County, Geology
The ground under Lamar County
PredictedMost of the ground under Lamar County is one class on USGS's geologic map: 99.7% of its land is moderate radon potential, with 0.3% low. 96.4% of it lies in the area the map calls Inner Coastal Plain, to which USGS gives a radon index of 10, 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 | 96.4% |
| Appalachian Plateau | Limestone, sandstone, carbonaceous shale, coal | Moderate | 9 | 3.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Lamar County beside the ground around it
Across Alabama 14.3% of the land is rated high; none of Lamar County's is. Of the 5 counties that border it, 3 have more moderate-potential ground, Fayette County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Lamar County, Local resources
Radon testing and mitigation in Lamar 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
Lamar County, Questions
Questions about radon in Lamar County
Are radon levels high in Lamar County?
Over the 2008 to 2017 laboratory totals, 75.0% of the radon tests reported to CDC for Lamar County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 7.5 pCi/L. Of the 8 nearest counties with a figure, within 85 miles, the share of tests at or above 4 pCi/L runs from 8.5% to 36.2%.
Which counties border Lamar County?
Lamar County borders 5 counties: Fayette County, AL, Monroe County, MS, Marion County, AL, Lowndes County, MS and Pickens County, AL.
Products
Lamar County, Products
Testing a home in Lamar County
No CDC figure names Lamar County; the nearest county with one, Tuscaloosa County (47 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 Lamar 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
MonitorAEGTEST
HOUND-1011S rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Lamar County, Bordering counties
Counties bordering Lamar County
Calculated by Radon411- Radon levels in Marion County, ALEPA zone 2
8.0%at or above 4 pCi/L
Median 1.0 pCi/L · 25 tests
- Radon levels in Fayette County, ALEPA zone 2
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 2 tests
- Radon levels in Pickens County, ALEPA zone 2
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 2 tests
- Radon levels in Monroe County, MSEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
- Radon levels in Lowndes County, MSEPA zone 2
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
Lamar County, Cities and towns
Cities and towns in Lamar County
About 13,587 people live in Lamar County by the Census Bureau's estimate for July 1, 2025, 359 fewer than in 2020 (−2.6%). That works out to 22 people per square mile of land. No town dominates: Vernon, the largest, has 1,823 residents, 13.4% of the total. Together its 6 incorporated places hold 39.9% of those residents; the other 60.1% live outside any of them. Reported testing is thin here: 4 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.
From Vernon to Beaverton, CDC publishes no figure by town: each reads Lamar County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Vernon | 1,823 | −5.0% | 13.4% |
| Sulligent | 1,812 | −4.1% | 13.3% |
| Millport | 963 | −4.4% | 7.1% |
| Kennedy | 425 | −2.3% | 3.1% |
| Detroit | 223 | −3.5% | 1.6% |
| Beaverton | 181 | −1.6% | 1.3% |
6 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).
Lamar County, Homes
Homes in Lamar County
Of Lamar County's 7,107 homes, 62% are detached houses, against 69% across Alabama; 23% are mobile homes. Half of its homes were built before 1978, close to Alabama's 1985: 22% date from before 1960 and 13% from 2000 or later. 74% 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 | Lamar County | Alabama |
|---|---|---|
| Housing units | 7,107 | 2,316,192 |
| Detached houses | 62% | 69% |
| In buildings of 5 or more | 4% | 12% |
| Mobile homes | 23% | 13% |
| Built before 1960 | 22% | 16% |
| Built since 2000 | 13% | 27% |
| Middle year built | 1978 | 1985 |
| Owner-occupied | 74% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.