
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
EPA puts Elmore County in Zone 2, its middle radon zone, and 22.2% of its 36 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
22.2%
0.3 pts above AL
36 tests, 2008 to 2017
Median result
1.2pCi/L
Below action level
Midpoint of the tests, 2008 to 2017
Tests reported
36
25th of 27 by tests
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Alabama
4 of 27
Top quarter
By share, of 27 with 30+ tests
Read a result for Elmore County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.2 pCi/L
Below 2 pCi/L
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Elmore County's median reported result, 2008 to 2017.
The data
Elmore County, At a glance
Predicted: EPA radon zone
Elmore County is a
USGS geologic potential: Moderate across 90% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Of 36 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 26 | 72.2% |
| 2 to 4 pCi/L | 2 | 5.6% |
| 4 pCi/L and above | 8 | 22.2% |
These are the 36 tests reported to CDC for Elmore 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).
Elmore County, Compared
Elmore County's 36 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.2 pCi/L and a maximum of 18.8 pCi/L, and 22.2% reached 4 pCi/L. Alabama as a whole (65 Alabama counties, pooled) comes to 21.9%: 0.3 points lower than here.
Among its state's counties it ranks 4th 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, 26 tests (72.2%) came in under 2 pCi/L, against 54.3% statewide, and 2 tests (5.6%) fell between 2 and 4, against 23.8% statewide. CDC's ten-year totals for Elmore County went from 29 tests (2005 to 2014) to 36 (2008 to 2017), the share going from 3.4% to 22.2%.
EPA's 1993 zone map puts Elmore County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 90% of the county's land moderate radon potential.
Next door, the shares run from 9.7% in Montgomery County to 17.1% in Autauga County, with Autauga County and Montgomery County below Elmore County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Elmore County, Geology
Most of the ground under Elmore County is one class on USGS's geologic map: 90.1% of its land is moderate radon potential, with 9.9% low. The map puts 48.1% of Elmore County in the area it calls Inner Coastal Plain and 42.0% in Northern Piedmont, with one smaller area beside them. USGS gives the first a radon index of 10 and the second 9, both 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 | 48.1% |
| Northern Piedmont | Graphitic schists, phyllites, and felsic gneiss. | Moderate | 9 | 42.0% |
| Inner Piedmont | Amphibolite, ultramafic rocks, gneiss, schist, minor granite. | Low | 7 | 9.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Alabama 14.3% of the land is rated high; none of Elmore County's is. Of the 6 counties that border it, 2 have more high-potential ground, Coosa County the most at 46.6%.
The map rates the ground, not the air in any home.
Local help
Elmore County, Local resources
What it means
Elmore County, Questions
Over the 2008 to 2017 laboratory totals, 22.2% of the radon tests reported to CDC for Elmore County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Of 27 Alabama counties with 30 or more tests for the same period, 3 reported a higher share; pooled, the state comes to 21.9%.
Elmore County borders 6 counties: Coosa County, Macon County, Montgomery County, Autauga County, Tallapoosa County and Chilton County.
Products
Elmore County, Products
In Elmore County, 22.2% of 36 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 21.9% pooled across Alabama. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Elmore County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Elmore County, Bordering counties
22.2%at or above 4 pCi/L
Median 0.1 pCi/L · 9 tests · 0.0 points above Elmore County
17.1%at or above 4 pCi/L
Median 0.9 pCi/L · 35 tests · 5.1 points below Elmore County
11.1%at or above 4 pCi/L
Median 1.1 pCi/L · 18 tests · 11.1 points below Elmore County
9.7%at or above 4 pCi/L
Median 0.9 pCi/L · 103 tests · 12.5 points below Elmore County
6.3%at or above 4 pCi/L
Median 0.9 pCi/L · 16 tests · 15.9 points below Elmore County
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 9 tests · 22.2 points below Elmore County
Elmore County, Cities and towns
The Census Bureau estimates 91,577 residents in Elmore County for July 1, 2025, 3,711 more than in 2020 (+4.2%). That works out to 148 people per square mile of land. Prattville, the largest place on its list (40,582 residents in all), extends beyond Elmore County, so no share of the total is worked out for it. Reported testing is thin here: 36 tests over 2008 to 2017, or 0.4 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.
From Prattville to Eclectic, CDC publishes no figure by town: each reads Elmore County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Prattvilleextends beyond Elmore County | 40,582 | +7.3% | Counted whole |
| Millbrookextends beyond Elmore County | 17,623 | +6.4% | Counted whole |
| Wetumpka | 7,535 | +3.0% | 8.2% |
| Tallasseeextends beyond Elmore County | 4,738 | −1.1% | Counted whole |
| Deatsville | 1,715 | +2.8% | 1.9% |
| Elmore | 1,382 | +16.7% | 1.5% |
| Coosada | 1,315 | +8.6% | 1.4% |
| Eclectic | 1,256 | +5.7% | 1.4% |
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 Elmore County is counted whole, so it has no share.
Elmore County, Homes
Of Elmore County's 37,085 homes, 74% are detached houses, against 69% across Alabama; 16% are mobile homes. Much of Elmore County is recent building: 41% of its homes have gone up since 2000 and the middle year built is 1995, against 1985 for Alabama. 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 | Elmore County | Alabama |
|---|---|---|
| Housing units | 37,085 | 2,316,192 |
| Detached houses | 74% | 69% |
| In buildings of 5 or more | 5% | 12% |
| Mobile homes | 16% | 13% |
| Built before 1960 | 8% | 16% |
| Built since 2000 | 41% | 27% |
| Middle year built | 1995 | 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.