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Radon Levels in Menifee County, Kentucky

EPA puts Menifee County in Zone 2, its middle radon zone, and 22.0% of its 41 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

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  • Share at 4+ pCi/L

    22.0%

    21.7 pts below KY

    Menifee
    22.0%
    Kentucky
    43.7%

    41 tests, 2008 to 2017

  • Median result

    1.4pCi/L

    Below action level

    Menifee
    1.4 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    41

    60th of 69 by tests

    Menifee
    41
    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

    59 of 69

    Lowest quarter

    Menifee
    22.0%
    Meade
    68.4%

    By share, of 69 with 30+ tests

Read a result for Menifee County

Starts at Menifee County's median, 1.4 pCi/L

1.4pCi/L

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

EPA’s reading of 1.4 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Menifee County's median reported result, 2008 to 2017.

Interpret this reading

The data

Menifee County, At a glance

Menifee County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Menifee 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Menifee County, 2008 to 2017, laboratory
Under 2 pCi/L: 56%2 to 4 pCi/L: 22%4 pCi/L and above: 22%

Of 41 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Menifee County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2356.1%
2 to 4 pCi/L922.0%
4 pCi/L and above922.0%
What these figures count

These are the 41 tests reported to CDC for Menifee 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

Menifee County, Compared

Menifee County radon figures, compared

Calculated by Radon411

Menifee County's 41 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.4 pCi/L and a maximum of 17.5 pCi/L, and 22.0% reached 4 pCi/L. Kentucky as a whole (120 Kentucky counties, pooled) comes to 43.7%: 21.7 points higher than here.

Among its state's counties it ranks 59th of 69 Kentucky counties with 30 or more tests for the same period. Statewide for the same period, Meade County reported the highest share (68.4%) and Hopkins County the lowest (9.5%).

Below the action level, 23 tests (56.1%) came in under 2 pCi/L, against 33.2% statewide, and 9 tests (22.0%) fell between 2 and 4, against 23.1% statewide. CDC's ten-year totals for Menifee County went from 6 tests (2005 to 2014) to 41 (2008 to 2017), the share going from 16.7% to 22.0%.

EPA's 1993 zone map puts Menifee 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 18.9% in Rowan County to 51.4% in Montgomery County, with Rowan County below Menifee County.

Menifee County against Kentucky, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Menifee County
Menifee County4122.0%1.4 pCi/LThis county
Kentucky, pooled120 counties, pooled28,79343.7%Not pooled+21.7 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+13.7 points
Meade Countyhighest in the state11768.4%8.2 pCi/L+46.4 points
Hopkins Countylowest in the state429.5%1.7 pCi/L−12.5 points
Montgomery County, KYborders it10551.4%4.1 pCi/L+29.4 points
Powell County, KYborders it2944.8%3.2 pCi/L+22.8 points
Bath County, KYborders it1241.7%3.1 pCi/L+19.7 points
Rowan County, KYborders it7418.9%1.6 pCi/L−3.1 points
Morgan County, KYborders it185.6%1.2 pCi/L−16.4 points
Wolfe County, KYborders it40.0%0.1 pCi/L−22.0 points
Where Menifee County's reported results fell, 2008 to 2017, laboratory, beside Kentucky and the United States
ResultMenifee County testsMenifee County shareKentucky shareU.S. shareAgainst Kentucky
Under 2 pCi/L2356.1%33.2%39.6%+22.9 points
2 to 4 pCi/L922.0%23.1%24.7%−1.1 points
4 pCi/L and above922.0%43.7%35.7%−21.7 points
Menifee 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
Mason County54 of 693225.0%2.6 pCi/L
Russell County54 of 693225.0%2.9 pCi/L
Henderson County56 of 695424.1%2.3 pCi/L
Trigg County57 of 694522.2%2.4 pCi/L
Laurel County58 of 6910022.0%1.9 pCi/L
Menifee County59 of 694122.0%1.4 pCi/L
Edmonson County60 of 696221.0%1.6 pCi/L
Daviess County61 of 6914520.0%1.8 pCi/L
Breathitt County62 of 694719.1%1.7 pCi/L
Rowan County63 of 697418.9%1.6 pCi/L
Boyd County64 of 6916817.9%2.1 pCi/L
Menifee County ten-year laboratory totals, against Kentucky's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestKentucky, pooledChange from the row before
2008 to 20174122.0%1.4 pCi/L17.5 pCi/L43.7%−0.2 points
2007 to 2016922.2%2.4 pCi/L8.6 pCi/L45.1%+9.7 points
2006 to 2015812.5%1.6 pCi/L8.6 pCi/L46.4%−4.2 points
2005 to 2014616.7%1.6 pCi/L8.6 pCi/L47.3%First on file

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

Menifee County, Geology

The ground under Menifee County

Predicted

USGS's geologic map puts all of Menifee County's mapped land in one class: moderate radon potential. The map puts 54.8% of Menifee County in the area it calls Cumberland Plateau and 45.2% in Mississippian Plateau. USGS gives the first a radon index of 9 and the second 11, both in the moderate band (9 to 11).

USGS's geologic areas under Menifee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Cumberland PlateauPennsylvanian sandstones, siltstones, and shales.Moderate954.8%
Mississippian PlateauMississippian marine limestones, dolomites, marine sandstones, siltstones, and shales.Moderate1145.2%

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

Menifee County beside the ground around it

Across Kentucky 18.2% of the land is rated high; none of Menifee County's is. Of the 6 counties that border it, 4 have more high-potential ground, Montgomery County the most at 38.7%.

Share of land by USGS radon potential: Menifee County, the 6 counties bordering it and Kentucky
AreaEPA zoneLow potentialModerate potentialHigh potential
Menifee CountyZone 2None100%None
Powell CountyZone 2None75.6%24.4%
Wolfe CountyZone 2None100%None
Bath CountyZone 2None64.6%35.4%
Montgomery CountyZone 2None61.3%38.7%
Morgan CountyZone 2None100%None
Rowan CountyZone 2None89.2%10.8%
Kentucky120 counties, pooled by land areaVaries5.7%76.1%18.2%

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

Local help

Menifee County, Local resources

Radon testing and mitigation in Menifee County

What Kentucky's program says
Phone
502-782-2782
Email
Radon@ky.gov

What it means

Menifee County, Questions

Questions about radon in Menifee County

Are radon levels high in Menifee County?

Over the 2008 to 2017 laboratory totals, 22.0% of the radon tests reported to CDC for Menifee County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 58 reported a higher share; pooled, the state comes to 43.7%.

Which counties border Menifee County?

Menifee County borders 6 counties: Powell County, Wolfe County, Bath County, Montgomery County, Morgan County and Rowan County.

Products

Menifee County, Products

Testing a home in Menifee County

In Menifee County, 22.0% of 41 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 Menifee County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Menifee County homes, compared

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Menifee County, Bordering counties

Counties bordering Menifee County

Calculated by Radon411

Menifee County, Cities and towns

Cities and towns in Menifee County

The Census Bureau estimates 6,430 residents in Menifee County for July 1, 2025, 292 more than in 2020 (+4.8%). That works out to 32 people per square mile of land. Frenchburg, its one incorporated place, has 625 residents, 9.7% of the total. CDC's 41 reported tests for 2008 to 2017 work out to 6.4 per 1,000 residents (2025 estimate), close to Kentucky's 6.3.

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

Frenchburg, Menifee County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Frenchburg625+4.2%9.7%

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).

Menifee County, Homes

Homes in Menifee County

Menifee County is a place of houses on their own lots: 75% of its 3,387 homes are detached single-family houses, against 68% across Kentucky. Much of Menifee County is recent building: 30% of its homes have gone up since 2000 and the middle year built is 1990, against 1982 for Kentucky. 73% 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 Menifee County, Kentucky, 2019 to 2023
HomesMenifee CountyKentucky
Housing units3,3872,010,655
Detached houses75%68%
In buildings of 5 or more2%12%
Mobile homes21%11%
Built before 19607%22%
Built since 200030%24%
Middle year built19901982
Owner-occupied73%68%

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