Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Leslie County, Kentucky
EPA puts Leslie County in Zone 2, its middle radon zone, and only 10 radon tests from it are 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
19.1%
Breathitt County, 30 miles
- Breathitt
- 19.1%
- Kentucky
- 43.7%
Share at 4+ pCi/L, 47 tests, 2008 to 2017
Ground above low
100.0%
5.7 pts above Kentucky
- Leslie
- 100.0%
- Kentucky
- 94.3%
Share of land USGS rates moderate or high potential
Tests reported
10
Too few for a share
- Leslie
- 10
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Leslie 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
Leslie County, At a glance
Leslie County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Leslie 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
Radon tests reported for Leslie County, 2008 to 2017, laboratory
CDC holds 10 reported tests for Leslie County over the 2008 to 2017 laboratory totals, with a median of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Leslie County beside the counties around it is how this page reads it.
What these figures count
Only 10 tests were reported to CDC for Leslie 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).
Leslie County, Compared
Leslie County radon figures, compared
Calculated by Radon411CDC's largest figure for Leslie County rests on 10 tests over the 2008 to 2017 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 4.1 pCi/L, with a middle value of 0.1 pCi/L.
The nearest counties with a figure are Breathitt County (30 miles away) at 19.1%, Laurel County (41 miles away) at 22.0% and Estill County (52 miles away) at 44.1%. 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 Leslie County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Leslie County, Geology
The ground under Leslie County
PredictedUSGS's geologic map puts all of Leslie County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Cumberland Plateau, to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Cumberland Plateau | Pennsylvanian sandstones, siltstones, and shales. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Leslie County beside the ground around it
Across Kentucky 18.2% of the land is rated high; none of Leslie County's is. Of the 4 counties that border it, 2 have more high-potential ground, Harlan County the most at 6.9%.
The map rates the ground, not the air in any home.
Local help
Leslie County, Local resources
Radon testing and mitigation in Leslie 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
Leslie County, Questions
Questions about radon in Leslie County
Are radon levels high in Leslie County?
Over the 2008 to 2017 laboratory totals, 10.0% of the radon tests reported to CDC for Leslie County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 71 miles, the share of tests at or above 4 pCi/L runs from 17.1% to 59.5%.
Which counties border Leslie County?
Leslie County borders 4 counties: Perry County, Harlan County, Clay County and Bell County.
Products
Leslie County, Products
Testing a home in Leslie County
No CDC figure names Leslie County; the nearest county with one, Breathitt County (30 miles away), reported 19.1% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Leslie County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoBlu plug-in digital radon monitor with a display
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
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
Leslie County, Bordering counties
Counties bordering Leslie County
Calculated by Radon411- Radon levels in Harlan CountyEPA zone 2
25.0%at or above 4 pCi/L
Median 0.1 pCi/L · 4 tests
- Radon levels in Perry CountyEPA zone 2
20.8%at or above 4 pCi/L
Median 1.4 pCi/L · 24 tests
- Radon levels in Clay CountyEPA zone 2
20.0%at or above 4 pCi/L
Median 2.1 pCi/L · 10 tests
- Radon levels in Bell CountyEPA zone 2
12.5%at or above 4 pCi/L
Median 1.3 pCi/L · 8 tests
Leslie County, Cities and towns
Cities and towns in Leslie County
Leslie County has been losing residents: from 10,470 in 2020 to 9,627 on July 1, 2025, a fall of 8.1% by the Census Bureau's estimates. That works out to 24 people per square mile of land. Hyden, its one incorporated place, has 279 residents, 2.9% of the total. Reported testing is thin here: 10 tests over 2008 to 2017, or 1.0 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 6.3.
Hyden is the one incorporated place here; CDC publishes no figure by town, so it reads Leslie County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hyden | 279 | −7.9% | 2.9% |
One incorporated place, 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).
Leslie County, Homes
Homes in Leslie County
Of Leslie County's 4,913 homes, 64% are detached houses, against 68% across Kentucky; 34% are mobile homes. Half of its homes were built before 1983, close to Kentucky's 1982: 18% date from before 1960 and 18% from 2000 or later. Owners live in 83% of the occupied homes (Kentucky: 68%), so for most households a test and a fix are their own to order.
| Homes | Leslie County | Kentucky |
|---|---|---|
| Housing units | 4,913 | 2,010,655 |
| Detached houses | 64% | 68% |
| In buildings of 5 or more | 1% | 12% |
| Mobile homes | 34% | 11% |
| Built before 1960 | 18% | 22% |
| Built since 2000 | 18% | 24% |
| Middle year built | 1983 | 1982 |
| Owner-occupied | 83% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.