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Radon Levels in Wayne County, Kentucky

EPA puts Wayne County in Zone 2, its middle radon zone, and high results are common there: 60.9% of the 64 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

    60.9%

    17.2 pts above KY

    Wayne
    60.9%
    Kentucky
    43.7%

    64 tests, 2008 to 2017

  • Median result

    5.0pCi/L

    Action level reached

    Wayne
    5.0 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    64

    46th of 69 by tests

    Wayne
    64
    Jefferson
    6,590

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Kentucky

    5 of 69

    Top quarter

    Wayne
    60.9%
    Meade
    68.4%

    By share, of 69 with 30+ tests

Read a result for Wayne County

Starts at Wayne County's median, 5.0 pCi/L

5.0pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 5.0 pCi/L

At or above 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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. Wayne County's median reported result, 2008 to 2017.

The data

Wayne County, At a glance

Wayne County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Wayne County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 82% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Wayne County, 2008 to 2017, laboratory

Reported results by concentration band, Wayne County, 2008 to 2017, laboratory
Under 2 pCi/L: 27%2 to 4 pCi/L: 12%4 pCi/L and above: 61%

Of 64 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Wayne County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L1726.6%
2 to 4 pCi/L812.5%
4 pCi/L and above3960.9%
What these figures count

These are the 64 tests reported to CDC for Wayne 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).

How to read these figures

Wayne County, Compared

Wayne County radon figures, compared

Calculated by Radon411

More than half: 60.9% of the 64 radon tests reported to CDC for Wayne County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 5th of 69 Kentucky counties with 30 or more tests for the same period. That is 17.2 points above the 43.7% pooled from 120 Kentucky counties.

The median result, 5.0 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 97.0 pCi/L. The rest split 26.6% under 2 pCi/L and 12.5% from 2 to 4 (Kentucky: 33.2% and 23.1%). The reported tests do not follow EPA's Zone 2 label for Wayne County (predicted average between 2 and 4 pCi/L): 60.9% of them reached 4 pCi/L, fewer than that label suggests.

No bordering county with a figure for the same period reported a higher share; the closest is Pulaski County at 59.5%, the lowest Scott County, TN at 2.6%. Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%).

CDC's ten-year totals for Wayne County went from 41 tests (2005 to 2014) to 64 (2008 to 2017), the share going from 65.9% to 60.9%.

Nationally, every county with a figure for the same period pools to 35.7%; Wayne County sits 25.2 points above it.

Wayne County against Kentucky, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Wayne County
Wayne County6460.9%5.0 pCi/LThis county
Kentucky, pooled120 counties, pooled28,79343.7%Not pooled−17.2 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−25.2 points
Meade Countyhighest in the state11768.4%8.2 pCi/L+7.5 points
Hopkins Countylowest in the state429.5%1.7 pCi/L−51.4 points
Pulaski County, KYborders it39559.5%5.1 pCi/L−1.4 points
Clinton County, KYborders it4047.5%3.5 pCi/L−13.4 points
Pickett County, TNborders it4346.5%3.5 pCi/L−14.4 points
Russell County, KYborders it3225.0%2.9 pCi/L−35.9 points
Scott County, TNborders it392.6%1.3 pCi/L−58.3 points
McCreary County, KYborders it90.0%1.2 pCi/L−60.9 points
Where Wayne County's reported results fell, 2008 to 2017, laboratory, beside Kentucky and the United States
ResultWayne County testsWayne County shareKentucky shareU.S. shareAgainst Kentucky
Under 2 pCi/L1726.6%33.2%39.6%−6.6 points
2 to 4 pCi/L812.5%23.1%24.7%−10.6 points
4 pCi/L and above3960.9%43.7%35.7%+17.2 points
Wayne County ranked among the 69 Kentucky counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Meade County1 of 6911768.4%8.2 pCi/L
Nelson County2 of 6930466.1%6.3 pCi/L
Hart County3 of 698465.5%8.0 pCi/L
Warren County4 of 691,62461.5%6.3 pCi/L
Wayne County5 of 696460.9%5.0 pCi/L
Pulaski County6 of 6939559.5%5.1 pCi/L
Woodford County7 of 6934257.9%4.9 pCi/L
Taylor County8 of 699157.1%4.4 pCi/L
Jessamine County9 of 6978955.5%4.7 pCi/L
Fayette County10 of 695,26354.5%4.5 pCi/L
Boyle County11 of 6949253.9%4.4 pCi/L
Wayne County ten-year laboratory totals, against Kentucky's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestKentucky, pooledChange from the row before
2008 to 20176460.9%5.0 pCi/L97.0 pCi/L43.7%−1.2 points
2007 to 20165862.1%5.9 pCi/L97.0 pCi/L45.1%−0.6 points
2006 to 20155162.7%5.8 pCi/L89.7 pCi/L46.4%−3.2 points
2005 to 20144165.9%6.0 pCi/L36.5 pCi/L47.3%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Wayne County, Geology

The ground under Wayne County

Predicted

Most of the ground under Wayne County is one class on USGS's geologic map: 82.4% of its land is moderate radon potential, with 16.5% high and 1.2% low. The map puts 82.3% of Wayne County in the area it calls Mississippian Plateau and 16.5% in Eastern Pennyroyal, with one smaller area beside them. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 12, in the high band (12 to 17).

USGS's geologic areas under Wayne County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Mississippian PlateauMississippian marine limestones, dolomites, marine sandstones, siltstones, and shales.Moderate1182.3%
Eastern PennyroyalMarine shale, sandstone and limestone.High1216.5%
Appalachian PlateauSandstone and shale.Low81.2%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Wayne County beside the ground around it

On high-potential ground Wayne County is close to Kentucky as a whole: 16.5% of its land against 18.2%. Of the 6 counties that border it, 3 have more high-potential ground, Russell County the most at 100%.

Share of land by USGS radon potential: Wayne County, the 6 counties bordering it and Kentucky
AreaEPA zoneLow potentialModerate potentialHigh potential
Wayne CountyZone 21.2%82.4%16.5%
Clinton CountyZone 2None83.3%16.7%
McCreary CountyZone 212.7%87.3%None
Russell CountyZone 1NoneNone100%
Pulaski CountyZone 1None68.7%31.3%
Pickett County, TNZone 219.1%80.9%None
Scott County, TNZone 399.9%0.1%None
Kentucky120 counties, pooled by land areaVaries5.7%76.1%18.2%

The map rates the ground, not the air in any home.

What it means

Wayne County, Questions

Questions about radon in Wayne County

Are radon levels high in Wayne County?

Over the 2008 to 2017 laboratory totals, 60.9% of the radon tests reported to CDC for Wayne County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.0 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 4 reported a higher share; pooled, the state comes to 43.7%.

Which counties border Wayne County?

Wayne County borders 6 counties: Clinton County, KY, McCreary County, KY, Russell County, KY, Pulaski County, KY, Pickett County, TN and Scott County, TN.

Products

Wayne County, Products

Testing a home in Wayne County

In Wayne County, 60.9% of 64 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 43.7% pooled across Kentucky. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Wayne County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Wayne County homes, compared

Explore

Wayne County, Bordering counties

Counties bordering Wayne County

Calculated by Radon411

Wayne County, Cities and towns

Cities and towns in Wayne County

Wayne County's population has barely moved since 2020: 19,597 residents on July 1, 2025 against 19,548 then, by the Census Bureau's estimates. That works out to 43 people per square mile of land. Monticello, its one incorporated place, has 5,721 residents, 29.2% of the total. Reported testing is thin here: 64 tests over 2008 to 2017, or 3.3 for every 1,000 residents (2025 estimate), where Kentucky as a whole comes to 6.3.

Monticello is the one incorporated place here; CDC publishes no figure by town, so it reads Wayne County's.

Monticello, Wayne County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Monticello5,721−0.6%29.2%

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).

Wayne County, Homes

Homes in Wayne County

Of Wayne County's 10,144 homes, 67% are detached houses, against 68% across Kentucky; 25% are mobile homes. Half of its homes were built before 1986, close to Kentucky's 1982: 14% date from before 1960 and 23% from 2000 or later. 72% of occupied homes are lived in by their owner (Kentucky: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Wayne County, Kentucky, 2019 to 2023
HomesWayne CountyKentucky
Housing units10,1442,010,655
Detached houses67%68%
In buildings of 5 or more3%12%
Mobile homes25%11%
Built before 196014%22%
Built since 200023%24%
Middle year built19861982
Owner-occupied72%68%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.