Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Morgan County, Alabama
EPA puts Morgan County in Zone 1, its highest radon zone, and most reported tests there come back low, though 14.6% of 453 (2008 to 2017, laboratory totals) reached 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
14.6%
7.3 pts below AL
- Morgan
- 14.6%
- Alabama
- 21.9%
453 tests, 2008 to 2017
Median result
1.4pCi/L
Below action level
- Morgan
- 1.4 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
453
6th of 27 by tests
- Morgan
- 453
- 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
15 of 27
Middle half
- Morgan
- 14.6%
- Colbert
- 36.2%
By share, of 27 with 30+ tests
Read a result for Morgan County
Starts at Morgan 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. Morgan County's median reported result, 2008 to 2017.
The data
Morgan County, At a glance
Morgan County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Morgan County in
USGS geologic potential: High across 77% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Morgan County, 2008 to 2017, laboratory
Under 2 pCi/L: 64%2 to 4 pCi/L: 21%4 pCi/L and above: 15%
Of 453 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 291 | 64.2% |
| 2 to 4 pCi/L | 96 | 21.2% |
| 4 pCi/L and above | 66 | 14.6% |
What these figures count
These are the 453 tests reported to CDC for Morgan 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).
Morgan County, Compared
Morgan County radon figures, compared
Calculated by Radon411Morgan County reports fewer high tests than Alabama overall. 14.6% of its 453 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 7.3 points below the 21.9% pooled from 65 Alabama counties.
Ordered from highest share down, it comes 15th of 27 Alabama counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Morgan County sits 21.1 points below it.
Next door, the shares run from 10.1% in Limestone County to 25.2% in Madison County, with Cullman County and Limestone County below Morgan County. The reported tests do not follow EPA's Zone 1 label for Morgan County (predicted average above 4 pCi/L): 14.6% of them reached 4 pCi/L, fewer than that label suggests.
Half the tests came in under 1.4 pCi/L and half over it; the single highest reached 96.7 pCi/L. The rest split 64.2% under 2 pCi/L and 21.2% from 2 to 4 (Alabama: 54.3% and 23.8%).
CDC's ten-year totals for Morgan County went from 506 tests (2005 to 2014) to 453 (2008 to 2017), the share going from 15.0% to 14.6%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Morgan County, Geology
The ground under Morgan County
PredictedMost of the ground under Morgan County is one class on USGS's geologic map: 76.5% of its land is high radon potential, with 23.5% moderate. The map puts 76.5% of Morgan County in the area it calls Interior Low Plateaus and 23.5% in Appalachian Plateau. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 9, 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 | 76.5% |
| Appalachian Plateau | Limestone, sandstone, carbonaceous shale, coal | Moderate | 9 | 23.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Morgan County beside the ground around it
Morgan County has more high-potential ground than Alabama as a whole: 76.5% of its land against 14.3%. Of the 5 counties that border it, 2 have more high-potential ground, Limestone County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Morgan County, Local resources
Radon testing and mitigation in Morgan 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
Morgan County, Questions
Questions about radon in Morgan County
Are radon levels high in Morgan County?
Over the 2008 to 2017 laboratory totals, 14.6% of the radon tests reported to CDC for Morgan 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, 14 reported a higher share; pooled, the state comes to 21.9%.
Which counties border Morgan County?
Morgan County borders 5 counties: Madison County, Limestone County, Cullman County, Lawrence County and Marshall County.
Products
Morgan County, Products
Testing a home in Morgan County
In Morgan County, 14.6% of 453 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 Morgan 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
Corentium Home battery digital radon detector
- C-NRPP 2024/25: Approved
- Battery
- Screen
Method: Alpha spectrometry
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
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Morgan County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Morgan County
Explore
Morgan County, Bordering counties
Counties bordering Morgan County
Calculated by Radon411- Radon levels in Madison CountyEPA zone 1
25.2%at or above 4 pCi/L
Median 1.9 pCi/L · 5,178 tests · 10.6 points above Morgan County
- Radon levels in Lawrence CountyEPA zone 1
16.2%at or above 4 pCi/L
Median 1.7 pCi/L · 154 tests · 1.6 points above Morgan County
- Radon levels in Marshall CountyEPA zone 2
15.1%at or above 4 pCi/L
Median 1.3 pCi/L · 199 tests · 0.5 points above Morgan County
- Radon levels in Cullman CountyEPA zone 2
11.4%at or above 4 pCi/L
Median 1.5 pCi/L · 79 tests · 3.2 points below Morgan County
- Radon levels in Limestone CountyEPA zone 1
10.1%at or above 4 pCi/L
Median 1.3 pCi/L · 674 tests · 4.5 points below Morgan County
Morgan County, Cities and towns
Cities and towns in Morgan County
The Census Bureau estimates 126,483 residents in Morgan County for July 1, 2025, 3,162 more than in 2020 (+2.6%). That works out to 218 people per square mile of land. Huntsville, the largest place on its list (233,627 residents in all), extends beyond Morgan County, so no share of the total is worked out for it. CDC's 453 reported tests for 2008 to 2017 work out to 3.6 per 1,000 residents (2025 estimate), close to Alabama's 2.4.
From Huntsville to Eva, CDC publishes no figure by town: each reads Morgan County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Huntsvilleextends beyond Morgan County | 233,627 | +8.0% | Counted whole |
| Decaturextends beyond Morgan County | 58,056 | +1.6% | Counted whole |
| Hartselle | 16,312 | +4.7% | 12.9% |
| Priceville | 3,952 | +11.1% | 3.1% |
| Trinityextends beyond Morgan County | 2,638 | +4.0% | Counted whole |
| Falkville | 1,121 | −5.6% | 0.9% |
| Somerville | 833 | +4.5% | 0.7% |
| Eva | 604 | +2.2% | 0.5% |
Places in Morgan County with a city page: 1 of 1
8 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 Morgan County is counted whole, so it has no share.
Morgan County, Homes
Homes in Morgan County
Of Morgan County's 53,569 homes, 72% are detached houses, against 69% across Alabama; 11% are mobile homes. Half of its homes were built before 1983, close to Alabama's 1985: 14% date from before 1960 and 23% from 2000 or later. 73% 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 | Morgan County | Alabama |
|---|---|---|
| Housing units | 53,569 | 2,316,192 |
| Detached houses | 72% | 69% |
| In buildings of 5 or more | 10% | 12% |
| Mobile homes | 11% | 13% |
| Built before 1960 | 14% | 16% |
| Built since 2000 | 23% | 27% |
| Middle year built | 1983 | 1985 |
| Owner-occupied | 73% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.