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Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
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
64 tests, 2008 to 2017
Median result
5.0pCi/L
Action level reached
Midpoint of the tests, 2008 to 2017
Tests reported
64
46th of 69 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 Kentucky
5 of 69
Top quarter
By share, of 69 with 30+ tests
Read a result for Wayne County
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
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
Predicted: EPA radon zone
Wayne County is a
USGS geologic potential: Moderate across 82% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Of 64 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 17 | 26.6% |
| 2 to 4 pCi/L | 8 | 12.5% |
| 4 pCi/L and above | 39 | 60.9% |
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).
Wayne County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Wayne County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Mississippian Plateau | Mississippian marine limestones, dolomites, marine sandstones, siltstones, and shales. | Moderate | 11 | 82.3% |
| Eastern Pennyroyal | Marine shale, sandstone and limestone. | High | 12 | 16.5% |
| Appalachian Plateau | Sandstone and shale. | Low | 8 | 1.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Wayne County, Local resources
What it means
Wayne County, Questions
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%.
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
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 monitors: 1 of 3
Explore
Wayne County, Bordering counties
59.5%at or above 4 pCi/L
Median 5.1 pCi/L · 395 tests · 1.4 points below Wayne County
47.5%at or above 4 pCi/L
Median 3.5 pCi/L · 40 tests · 13.4 points below Wayne County
46.5%at or above 4 pCi/L
Median 3.5 pCi/L · 43 tests · 14.4 points below Wayne County
25.0%at or above 4 pCi/L
Median 2.9 pCi/L · 32 tests · 35.9 points below Wayne County
2.6%at or above 4 pCi/L
Median 1.3 pCi/L · 39 tests · 58.3 points below Wayne County
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 9 tests · 60.9 points below Wayne County
Wayne County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Monticello | 5,721 | −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
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 | Wayne County | Kentucky |
|---|---|---|
| Housing units | 10,144 | 2,010,655 |
| Detached houses | 67% | 68% |
| In buildings of 5 or more | 3% | 12% |
| Mobile homes | 25% | 11% |
| Built before 1960 | 14% | 22% |
| Built since 2000 | 23% | 24% |
| Middle year built | 1986 | 1982 |
| Owner-occupied | 72% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.