Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Carlisle County, Kentucky
EPA puts Carlisle 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
10.6%
Marshall County, 36 miles
- Marshall
- 10.6%
- Kentucky
- 43.7%
Share at 4+ pCi/L, 85 tests, 2008 to 2017
Ground above low
None
94.3 pts below Kentucky
- Carlisle
- 0.0%
- Kentucky
- 94.3%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Carlisle
- 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 Carlisle 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
Carlisle County, At a glance
Carlisle County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Carlisle County, 2008 to 2017, laboratory
CDC holds 1 reported test for Carlisle County over the 2008 to 2017 laboratory totals, a result of 2.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Carlisle County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Carlisle 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: 2006 to 2017 (every CDC figure on file).
Carlisle County, Compared
Carlisle County radon figures, compared
Calculated by Radon411CDC's largest figure for Carlisle 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 2.0 pCi/L, with a middle value of 2.0 pCi/L.
The nearest counties with a figure are Marshall County (36 miles away) at 10.6%, Trigg County (61 miles away) at 22.2% and Christian County (82 miles away) at 36.1%. Pooled across 120 Kentucky counties, 43.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%). EPA's 1993 map puts Carlisle County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Carlisle County, Geology
The ground under Carlisle County
PredictedUSGS's geologic map puts all of Carlisle County's mapped land in one class: low radon potential. The map puts 83.9% of Carlisle County in the area it calls Jackson Purchase and 16.1% in Coastal Plains Province. USGS gives the first a radon index of 6 and the second 5, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Jackson Purchase | Cretaceous and Tertiary marine and continental gravels, sands, silts, and clays, overlain by alluvium and loess. | Low | 6 | 83.9% |
| Coastal Plains Province | Tertiary-Quaternary sandstone, shale, and alluvium. | Low | 5 | 16.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Carlisle County beside the ground around it
Across Kentucky 18.2% of the land is rated high; none of Carlisle County's is. None of the 5 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Carlisle County, Local resources
Radon testing and mitigation in Carlisle County
- Kentucky's radon programKentucky Board of Radon SafetyKentucky's radon program answers questions about testing, mitigation and the rules in Kentucky.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
- Professionals in Kentucky8 professionals are listed in Kentucky.
What Kentucky's program says
- Phone
- 502-782-2782
- Radon@ky.gov
What it means
Carlisle County, Questions
Questions about radon in Carlisle County
Are radon levels high in Carlisle County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Carlisle County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of the 8 nearest counties with a figure, within 120 miles, the share of tests at or above 4 pCi/L runs from 9.5% to 36.1%.
Which counties border Carlisle County?
Carlisle County borders 5 counties: Ballard County, KY, Hickman County, KY, McCracken County, KY, Mississippi County, MO and Graves County, KY.
Products
Carlisle County, Products
Testing a home in Carlisle County
No CDC figure names Carlisle County; the nearest county with one, Marshall County (36 miles away), reported 10.6% 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 Carlisle 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
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Carlisle County, Bordering counties
Counties bordering Carlisle County
Calculated by Radon411- Radon levels in McCracken County, KYEPA zone 3
21.4%at or above 4 pCi/L
Median 1.6 pCi/L · 28 tests
- Radon levels in Graves County, KYEPA zone 3
8.3%at or above 4 pCi/L
Median 1.5 pCi/L · 24 tests
- Radon levels in Ballard County, KYEPA zone 3
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 4 tests
- Radon levels in Hickman County, KYEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 7 tests
- Radon levels in Mississippi County, MOEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 4 tests
Carlisle County, Cities and towns
Cities and towns in Carlisle County
About 4,747 people live in Carlisle County by the Census Bureau's estimate for July 1, 2025, 60 fewer than in 2020 (−1.2%). That works out to 25 people per square mile of land. No town dominates: Bardwell, the largest, has 713 residents, 15.0% of the total. Together its 2 incorporated places hold 20.4% of those residents; the other 79.6% live outside any of them. Reported testing is thin here: 1 test over 2008 to 2017, or 0.2 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 6.3.
From Bardwell to Arlington, CDC publishes no figure by town: each reads Carlisle County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Bardwell | 713 | −1.4% | 15.0% |
| Arlington | 256 | −1.9% | 5.4% |
2 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).
Carlisle County, Homes
Homes in Carlisle County
Carlisle County is a place of houses on their own lots: 76% of its 2,315 homes are detached single-family houses, against 68% across Kentucky. Half of its homes were built before 1977, close to Kentucky's 1982: 27% date from before 1960 and 19% from 2000 or later. Owners live in 81% of the occupied homes (Kentucky: 68%), so for most households a test and a fix are their own to order.
| Homes | Carlisle County | Kentucky |
|---|---|---|
| Housing units | 2,315 | 2,010,655 |
| Detached houses | 76% | 68% |
| In buildings of 5 or more | 3% | 12% |
| Mobile homes | 18% | 11% |
| Built before 1960 | 27% | 22% |
| Built since 2000 | 19% | 24% |
| Middle year built | 1977 | 1982 |
| Owner-occupied | 81% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.