Skip to content

Locations and reports

Radon Levels in Boone County, West Virginia

EPA puts Boone County in Zone 3, its lowest radon zone, and only 7 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

  • Highest bordering

    20.6%

    Kanawha County

    Kanawha
    20.6%
    Raleigh
    16.7%

    2 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    20.6%

    Kanawha County, 24 miles

    Kanawha
    20.6%
    WV
    37.5%

    Share at 4+ pCi/L, 247 tests, 2008 to 2017

  • Ground above low

    1.8%

    84.2 pts below WV

    Boone
    1.8%
    WV
    86.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    7

    Too few for a share

    Boone
    7
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Boone County

Starts at EPA's action level

4.0pCi/L

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

  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.

The data

Boone County, At a glance

Boone County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Boone County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 98% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 7 reported tests for Boone 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). Boone County beside the counties around it is how this page reads it.

What these figures count

Only 7 tests were reported to CDC for Boone 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).

How to read these figures

Boone County, Compared

Boone County radon figures, compared

Calculated by Radon411

CDC's largest figure for Boone County rests on 7 tests over the 2008 to 2017 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 14.3 points and no rank or comparison is drawn from it. Results reached as high as 4.2 pCi/L, with a middle value of 0.1 pCi/L.

Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Kanawha County reported the largest share at or above 4 pCi/L, 20.6%, and Raleigh County the smallest, 16.7%. Farther out, Putnam County (35 miles away) at 23.1%, Cabell County (40 miles away) at 16.6% and Mercer County (54 miles away) at 33.7% have figures too. Pooled across 55 West Virginia counties, 37.5% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Morgan County reported the highest share (58.1%) and Grant County the lowest (9.8%). EPA's 1993 map puts Boone County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 98% of the county's land low radon potential.

West Virginia, the United States and the counties around Boone County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
West Virginia, pooled55 counties, pooled10,06137.5%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Morgan Countyhighest in the state24158.1%5.8 pCi/L
Grant Countylowest in the state1649.8%1.1 pCi/L
Wyoming County, WVborders it333.3%0.8 pCi/L
Kanawha County, WVborders it24720.6%2.2 pCi/L
Lincoln County, WVborders it1118.2%1.9 pCi/L
Raleigh County, WVborders it4216.7%1.4 pCi/L
Logan County, WVborders it90.0%1.4 pCi/L
The nearest West Virginia counties to Boone County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Kanawha County24 mi24720.6%2.2 pCi/L
Raleigh County31 mi4216.7%1.4 pCi/L
Putnam County35 mi5223.1%1.5 pCi/L
Cabell County40 mi14516.6%2.0 pCi/L
Mercer County54 mi10133.7%2.1 pCi/L
Greenbrier County69 mi17652.3%4.5 pCi/L
Wood County83 mi90515.9%1.8 pCi/L
Tyler County109 mi3522.9%1.8 pCi/L
Boone County ten-year laboratory totals, against West Virginia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestWest Virginia, pooledChange from the row before
2008 to 2017714.3%0.1 pCi/L4.2 pCi/L37.5%−2.4 points
2007 to 2016616.7%0.1 pCi/L4.2 pCi/L37.3%−8.3 points
2006 to 2015425.0%0.1 pCi/L4.2 pCi/L37.7%Level
2005 to 2014425.0%0.1 pCi/L4.2 pCi/L37.3%First on file

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

Boone County, Geology

The ground under Boone County

Predicted

Most of the ground under Boone County is one class on USGS's geologic map: 98.2% of its land is low radon potential, with 1.8% moderate. 98.2% of it lies in the area the map calls Cumberland Plateau, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Boone County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Cumberland PlateauPennsylvanian sandstone, siltstone, shale, and coalLow898.2%
Central Allegheny PlateauPermian and Pennsylvanian shale, siltstone, sandstone, minor limestone.Moderate101.8%

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

Boone County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Boone County's is. Of the 5 counties that border it, 3 have more moderate-potential ground, Lincoln County the most at 90.0%.

Share of land by USGS radon potential: Boone County, the 5 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Boone CountyZone 398.2%1.8%None
Logan CountyZone 3100%NoneNone
Kanawha CountyZone 329.4%70.6%None
Lincoln CountyZone 210.0%90.0%None
Wyoming CountyZone 3100%NoneNone
Raleigh CountyZone 243.4%56.6%None
West Virginia55 counties, pooled by land areaVaries14.0%67.3%18.7%

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

What it means

Boone County, Questions

Questions about radon in Boone County

Are radon levels high in Boone County?

Over the 2008 to 2017 laboratory totals, 14.3% of the radon tests reported to CDC for Boone County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Kanawha County reported the largest share at or above 4 pCi/L, 20.6%, and Raleigh County the smallest, 16.7%.

Which counties border Boone County?

Boone County borders 5 counties: Logan County, Kanawha County, Lincoln County, Wyoming County and Raleigh County.

Products

Boone County, Products

Testing a home in Boone County

No CDC figure names Boone County; the nearest county with one, Kanawha County (24 miles away), reported 20.6% 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. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Boone County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Boone County homes, compared

Explore

Boone County, Bordering counties

Counties bordering Boone County

Calculated by Radon411

Boone County, Cities and towns

Cities and towns in Boone County

Boone County has been losing residents: from 21,746 in 2020 to 20,251 on July 1, 2025, a fall of 6.9% by the Census Bureau's estimates. That works out to 40 people per square mile of land. No town dominates: Madison, the largest, has 2,678 residents, 13.2% of the total. Together its 4 incorporated places hold 18.7% of those residents; the other 81.3% live outside any of them. Reported testing is thin here: 7 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where West Virginia as a whole comes to 5.7.

From Madison to Sylvester, CDC publishes no figure by town: each reads Boone County's.

The cities and towns in Boone County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Madison2,678−7.5%13.2%
Danville630−6.7%3.1%
Whitesville340−7.9%1.7%
Sylvester149−8.6%0.7%

4 incorporated places, 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).

Boone County, Homes

Homes in Boone County

Of Boone County's 10,167 homes, 68% are detached houses, against 71% across West Virginia; 26% are mobile homes. Half of its homes were built before 1975, close to West Virginia's 1976: 31% date from before 1960 and 15% from 2000 or later. Owners live in 79% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.

Homes in Boone County, West Virginia, 2019 to 2023
HomesBoone CountyWest Virginia
Housing units10,167859,653
Detached houses68%71%
In buildings of 5 or more2%8%
Mobile homes26%14%
Built before 196031%33%
Built since 200015%18%
Middle year built19751976
Owner-occupied79%74%

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