Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Henry County, Alabama
EPA puts Henry County in Zone 3, its lowest radon zone, and only 1 radon test from it is 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
9.7%
Montgomery County, 75 miles
- Montgomery
- 9.7%
- Alabama
- 21.9%
Share at 4+ pCi/L, 103 tests, 2008 to 2017
Ground above low
1.2%
63.4 pts below Alabama
- Henry
- 1.2%
- Alabama
- 64.7%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Henry
- 1
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Henry 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
Henry County, At a glance
Henry County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 99% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Henry County, 2008 to 2017, laboratory
CDC holds 1 reported test for Henry County over the 2008 to 2017 laboratory totals, a result of 2.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Henry County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Henry 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).
Henry County, Compared
Henry County radon figures, compared
Calculated by Radon411CDC's largest figure for Henry County rests on 1 test over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 2.1 pCi/L, with a middle value of 2.1 pCi/L.
The nearest counties with a figure are Montgomery County (75 miles away) at 9.7%, Lee County (75 miles away) at 12.3% and Elmore County (92 miles away) at 22.2%. 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 Henry County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 99% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Henry County, Geology
The ground under Henry County
PredictedMost of the ground under Henry County is one class on USGS's geologic map: 98.8% of its land is low radon potential, with 1.2% moderate. 97.5% of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Marly sandy clay, chalk, and glauconitic sands. | Low | 7 | 97.5% |
| Inner Coastal Plain | Marly sandy clay, chalk, and glauconitic sands. | Moderate | 10 | 1.2% |
| 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 | 1.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Henry County beside the ground around it
Across Alabama 14.3% of the land is rated high; none of Henry County's is. Of the 5 counties that border it, 1 has more moderate-potential ground, Barbour County the most at 59.5%.
The map rates the ground, not the air in any home.
Local help
Henry County, Local resources
Radon testing and mitigation in Henry 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
Henry County, Questions
Questions about radon in Henry County
Are radon levels high in Henry County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Henry County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.1 pCi/L. Of the 8 nearest counties with a figure, within 150 miles, the share of tests at or above 4 pCi/L runs from 9.7% to 22.2%.
Which counties border Henry County?
Henry County borders 5 counties: Clay County, GA, Dale County, AL, Barbour County, AL, Early County, GA and Houston County, AL.
Products
Henry County, Products
Testing a home in Henry County
No CDC figure names Henry County; the nearest county with one, Montgomery County (75 miles away), reported 9.7% 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. 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 Henry 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
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Henry County, Bordering counties
Counties bordering Henry County
Calculated by Radon411- Radon levels in Early County, GAEPA zone 3
50.0%at or above 4 pCi/L
Median 2.8 pCi/L · 2 tests
- Radon levels in Houston County, ALEPA zone 3
23.1%at or above 4 pCi/L
Median 1.3 pCi/L · 13 tests
- Radon levels in Dale County, ALEPA zone 3
0.0%at or above 4 pCi/L
Median 2.1 pCi/L · 1 test
- Radon levels in Barbour County, ALEPA zone 2
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 2 tests
- Radon levels in Clay County, GAEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
Henry County, Cities and towns
Cities and towns in Henry County
Henry County is growing: the Census Bureau puts it at 18,394 residents on July 1, 2025, up 7.1% from 17,172 in 2020. That works out to 33 people per square mile of land. Dothan, the largest place on its list (72,060 residents in all), extends beyond Henry County, so no share of the total is worked out for it. Reported testing is thin here: 1 test over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.
From Dothan to Haleburg, CDC publishes no figure by town: each reads Henry County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Dothanextends beyond Henry County | 72,060 | +1.3% | Counted whole |
| Headland | 5,603 | +12.7% | 30.5% |
| Abbeville | 2,378 | +1.0% | 12.9% |
| Newville | 566 | +4.2% | 3.1% |
| Haleburg | 122 | +6.1% | 0.7% |
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 Henry County is counted whole, so it has no share.
Henry County, Homes
Homes in Henry County
Of Henry County's 9,151 homes, 72% are detached houses, against 69% across Alabama; 24% are mobile homes. Half of its homes were built before 1982, close to Alabama's 1985: 19% date from before 1960 and 22% from 2000 or later. Owners live in 81% of the occupied homes (Alabama: 70%), so for most households a test and a fix are their own to order.
| Homes | Henry County | Alabama |
|---|---|---|
| Housing units | 9,151 | 2,316,192 |
| Detached houses | 72% | 69% |
| In buildings of 5 or more | 2% | 12% |
| Mobile homes | 24% | 13% |
| Built before 1960 | 19% | 16% |
| Built since 2000 | 22% | 27% |
| Middle year built | 1982 | 1985 |
| Owner-occupied | 81% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.