Skip to content
RADON411

Locations and reports

Radon Levels in Kenton County, Kentucky

EPA puts Kenton County in Zone 2, its middle radon zone, and 26.0% of its 1,167 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    26.0%

    17.7 pts below KY

    Kenton
    26.0%
    Kentucky
    43.7%

    1,167 tests, 2008 to 2017

  • Median result

    2.3pCi/L

    Below action level

    Kenton
    2.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    1,167

    5th of 69 by tests

    Kenton
    1,167
    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

    52 of 69

    Middle half

    Kenton
    26.0%
    Meade
    68.4%

    By share, of 69 with 30+ tests

Read a result for Kenton County

Starts at Kenton County's median, 2.3 pCi/L

2.3pCi/L

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

EPA’s reading of 2.3 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Kenton County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Kenton County, At a glance

Kenton County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Kenton 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 81% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Kenton County, 2008 to 2017, laboratory
Under 2 pCi/L: 43%2 to 4 pCi/L: 31%4 pCi/L and above: 26%

Of 1,167 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Kenton County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L49842.7%
2 to 4 pCi/L36531.3%
4 pCi/L and above30426.0%
What these figures count

These are the 1,167 tests reported to CDC for Kenton 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

Kenton County, Compared

Kenton County radon figures, compared

Calculated by Radon411

Kenton County's 1,167 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.3 pCi/L and a maximum of 23.9 pCi/L, and 26.0% reached 4 pCi/L. Kentucky as a whole (120 Kentucky counties, pooled) comes to 43.7%: 17.7 points higher than here.

Among its state's counties it ranks 52nd 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, 498 tests (42.7%) came in under 2 pCi/L, against 33.2% statewide, and 365 tests (31.3%) fell between 2 and 4, against 23.1% statewide. CDC's ten-year totals for Kenton County went from 860 tests (2005 to 2014) to 1,167 (2008 to 2017), the share going from 25.7% to 26.0%.

EPA's 1993 zone map puts Kenton County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 81% of the county's land moderate radon potential.

Next door, the shares run from 26.2% in Campbell County to 42.9% in Boone County.

CDC also counts 59 tests taken after mitigation in Kenton County for the same period: tests in homes where a fix was already in.

Kenton County against Kentucky, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Kenton County
Kenton County1,16726.0%2.3 pCi/LThis county
Kentucky, pooled120 counties, pooled28,79343.7%Not pooled+17.7 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+9.7 points
Meade Countyhighest in the state11768.4%8.2 pCi/L+42.4 points
Hopkins Countylowest in the state429.5%1.7 pCi/L−16.5 points
Boone County, KYborders it1,43442.9%3.5 pCi/L+16.9 points
Hamilton County, OHborders it3,75434.7%2.8 pCi/L+8.7 points
Grant County, KYborders it7833.3%2.5 pCi/L+7.3 points
Pendleton County, KYborders it3426.5%1.9 pCi/L+0.5 points
Campbell County, KYborders it54326.2%2.3 pCi/L+0.2 points
Where Kenton County's reported results fell, 2008 to 2017, laboratory, beside Kentucky and the United States
ResultKenton County testsKenton County shareKentucky shareU.S. shareAgainst Kentucky
Under 2 pCi/L49842.7%33.2%39.6%+9.5 points
2 to 4 pCi/L36531.3%23.1%24.7%+8.2 points
4 pCi/L and above30426.0%43.7%35.7%−17.7 points
Kenton 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
Clark County47 of 6923129.0%2.4 pCi/L
Grayson County48 of 693627.8%2.2 pCi/L
Washington County49 of 694427.3%2.4 pCi/L
Pendleton County50 of 693426.5%1.9 pCi/L
Campbell County51 of 6954326.2%2.3 pCi/L
Kenton County52 of 691,16726.0%2.3 pCi/L
Anderson County53 of 6922625.2%2.2 pCi/L
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
Kenton County ten-year laboratory totals, against Kentucky's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestKentucky, pooledChange from the row before
2008 to 20171,16726.0%2.3 pCi/L23.9 pCi/L43.7%−0.5 points
2007 to 20161,12126.5%2.4 pCi/L23.9 pCi/L45.1%−0.5 points
2006 to 201596427.0%2.4 pCi/L23.9 pCi/L46.4%+1.3 points
2005 to 201486025.7%2.3 pCi/L23.9 pCi/L47.3%First on file

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

Kenton County, Geology

The ground under Kenton County

Predicted

Most of the ground under Kenton County is one class on USGS's geologic map: 81.3% of its land is moderate radon potential, with 18.7% high. The map puts 81.0% of Kenton County in the area it calls Outer Bluegrass and 18.7% in Inner Bluegrass. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 13, in the high band (12 to 17).

USGS's geologic areas under Kenton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Outer BluegrassOrdovician-Devonian limestone and shale.Moderate1181.0%
Inner BluegrassOrdovician limestones, dolomites and shales.High1318.7%

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

Kenton County beside the ground around it

On high-potential ground Kenton County is close to Kentucky as a whole: 18.7% of its land against 18.2%. Of the 5 counties that border it, 1 has more high-potential ground, Pendleton County the most at 39.8%.

Share of land by USGS radon potential: Kenton County, the 5 counties bordering it and Kentucky
AreaEPA zoneLow potentialModerate potentialHigh potential
Kenton CountyZone 2None81.3%18.7%
Campbell CountyZone 2None86.3%13.7%
Boone CountyZone 2None100%None
Hamilton County, OHZone 1None88.5%11.5%
Grant CountyZone 2None100%None
Pendleton CountyZone 1None60.2%39.8%
Kentucky120 counties, pooled by land areaVaries5.7%76.1%18.2%

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

Local help

Kenton County, Local resources

Radon testing and mitigation in Kenton County

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

What it means

Kenton County, Questions

Questions about radon in Kenton County

Are radon levels high in Kenton County?

Over the 2008 to 2017 laboratory totals, 26.0% of the radon tests reported to CDC for Kenton County, Kentucky were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.3 pCi/L. Of 69 Kentucky counties with 30 or more tests for the same period, 51 reported a higher share; pooled, the state comes to 43.7%.

Which counties border Kenton County?

Kenton County borders 5 counties: Campbell County, KY, Boone County, KY, Hamilton County, OH, Grant County, KY and Pendleton County, KY.

Products

Kenton County, Products

Testing a home in Kenton County

In Kenton County, 26.0% of 1,167 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 Kenton County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Kenton County homes, compared

Explore

Kenton County, Bordering counties

Counties bordering Kenton County

Calculated by Radon411

Kenton County, Cities and towns

Cities and towns in Kenton County

The Census Bureau estimates 175,779 residents in Kenton County for July 1, 2025, 6,516 more than in 2020 (+3.8%). Packed into its land, that is 1,097 people per square mile. Its largest town, Covington, has 41,847 residents, 23.8% of the total. CDC's 1,167 reported tests for 2008 to 2017 work out to 6.6 per 1,000 residents (2025 estimate), close to Kentucky's 6.3.

From Covington to Kenton Vale, CDC publishes no figure by town: each reads Kenton County's.

The 12 largest cities and towns in Kenton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Covington41,847+2.2%23.8%
Independence30,198+4.9%17.2%
Erlangerextends beyond Kenton County20,158+2.4%Counted whole
Elsmere9,521+3.9%5.4%
Fort Mitchell8,751+0.6%5.0%
Edgewood8,503+0.8%4.8%
Villa Hills7,797+6.7%4.4%
Taylor Mill7,144+3.9%4.1%
Fort Wright6,240+7.5%3.5%
Waltonextends beyond Kenton County5,868+6.6%Counted whole
Crescent Springs4,708+9.7%2.7%
Ludlow4,391Level2.5%
  • Crittenden (part)
  • Crestview Hills
  • Park Hills
  • Lakeside Park
  • Ryland Heights
  • Bromley
  • Fairview
  • Kenton Vale

20 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Kenton County is counted whole, so it has no share.

Kenton County, Homes

Homes in Kenton County

Of Kenton County's 72,896 homes, 68% are detached houses, against 68% across Kentucky; 16% are in buildings of five or more homes. The homes are older than Kentucky's as a whole: half were built before 1974 (1982 for Kentucky), and 35% date from before 1960. 70% 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 Kenton County, Kentucky, 2019 to 2023
HomesKenton CountyKentucky
Housing units72,8962,010,655
Detached houses68%68%
In buildings of 5 or more16%12%
Mobile homes2%11%
Built before 196035%22%
Built since 200019%24%
Middle year built19741982
Owner-occupied70%68%

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