
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
EPA puts Autauga County in Zone 2, its middle radon zone, and 17.1% of its 35 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
17.1%
4.8 pts below AL
35 tests, 2008 to 2017
Median result
0.9pCi/L
Below action level
Midpoint of the tests, 2008 to 2017
Tests reported
35
26th 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
12 of 27
Middle half
By share, of 27 with 30+ tests
Read a result for Autauga County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.9 pCi/L
Below 2 pCi/L
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Autauga County's median reported result, 2008 to 2017.
The data
Autauga County, At a glance
Predicted: EPA radon zone
Autauga 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
Of 35 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 28 | 80.0% |
| 2 to 4 pCi/L | 1 | 2.9% |
| 4 pCi/L and above | 6 | 17.1% |
These are the 35 tests reported to CDC for Autauga 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).
Autauga County, Compared
Autauga County's 35 reported tests over the 2008 to 2017 laboratory totals had a middle value of 0.9 pCi/L and a maximum of 6.9 pCi/L, and 17.1% reached 4 pCi/L. Alabama as a whole (65 Alabama counties, pooled) comes to 21.9%: 4.8 points higher than here.
Among its state's counties it ranks 12th 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, 28 tests (80.0%) came in under 2 pCi/L, against 54.3% statewide, and 1 tests (2.9%) fell between 2 and 4, against 23.8% statewide. CDC's ten-year totals for Autauga County went from 37 tests (2005 to 2014) to 35 (2008 to 2017), the share going from 16.2% to 17.1%.
EPA's 1993 zone map puts Autauga County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Next door, the shares run from 9.7% in Montgomery County to 22.2% in Elmore County, with Montgomery County below Autauga County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Autauga County, Geology
USGS's geologic map puts all of Autauga County's mapped land in one class: moderate radon potential. All 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 | 100% |
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 Autauga County's is. Of the 5 counties that border it, 1 has more high-potential ground, Chilton County the most at 36.7%.
The map rates the ground, not the air in any home.
Local help
Autauga County, Local resources
What it means
Autauga County, Questions
Over the 2008 to 2017 laboratory totals, 17.1% of the radon tests reported to CDC for Autauga County, Alabama were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.9 pCi/L. Of 27 Alabama counties with 30 or more tests for the same period, 11 reported a higher share; pooled, the state comes to 21.9%.
Autauga County borders 5 counties: Lowndes County, Chilton County, Dallas County, Elmore County and Montgomery County.
Products
Autauga County, Products
In Autauga County, 17.1% of 35 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 Autauga County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Autauga County, Bordering counties
22.2%at or above 4 pCi/L
Median 1.2 pCi/L · 36 tests · 5.1 points above Autauga County
11.1%at or above 4 pCi/L
Median 1.1 pCi/L · 18 tests · 6.0 points below Autauga County
9.7%at or above 4 pCi/L
Median 0.9 pCi/L · 103 tests · 7.4 points below Autauga County
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 2 tests · 17.1 points below Autauga County
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 6 tests · 17.1 points below Autauga County
Autauga County, Cities and towns
Autauga County is growing: the Census Bureau puts it at 61,920 residents on July 1, 2025, up 5.1% from 58,914 in 2020. That works out to 104 people per square mile of land. Prattville, the largest place on its list (40,582 residents in all), extends beyond Autauga County, so no share of the total is worked out for it. Reported testing is thin here: 35 tests over 2008 to 2017, or 0.6 for every 1,000 residents (2025 estimate), where Alabama as a whole comes to 2.4.
From Prattville to Billingsley, CDC publishes no figure by town: each reads Autauga County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Prattvilleextends beyond Autauga County | 40,582 | +7.3% | Counted whole |
| Millbrookextends beyond Autauga County | 17,623 | +6.4% | Counted whole |
| Autaugaville | 817 | +4.1% | 1.3% |
| Billingsley | 129 | −0.8% | 0.2% |
4 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 Autauga County is counted whole, so it has no share.
Autauga County, Homes
Of Autauga County's 24,731 homes, 74% are detached houses, against 69% across Alabama; 17% are mobile homes. Much of Autauga County is recent building: 37% of its homes have gone up since 2000 and the middle year built is 1993, against 1985 for Alabama. 75% 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 | Autauga County | Alabama |
|---|---|---|
| Housing units | 24,731 | 2,316,192 |
| Detached houses | 74% | 69% |
| In buildings of 5 or more | 7% | 12% |
| Mobile homes | 17% | 13% |
| Built before 1960 | 8% | 16% |
| Built since 2000 | 37% | 27% |
| Middle year built | 1993 | 1985 |
| Owner-occupied | 75% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.