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Radon Levels in Logan County, West Virginia

EPA puts Logan County in Zone 3, its lowest radon zone, and only 9 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

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  • Nearest county

    16.7%

    Raleigh County, 38 miles

    Raleigh
    16.7%
    WV
    37.5%

    Share at 4+ pCi/L, 42 tests, 2008 to 2017

  • Ground above low

    None

    86.0 pts below WV

    Logan
    0.0%
    WV
    86.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    9

    Too few for a share

    Logan
    9
    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 Logan 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.

Interpret this readingWhat a fix costs

The data

Logan County, At a glance

Logan County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Logan 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 9 reported tests for Logan County over the 2008 to 2017 laboratory totals, with a median of 1.4 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Logan County beside the counties around it is how this page reads it.

What these figures count

Only 9 tests were reported to CDC for Logan 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

Logan County, Compared

Logan County radon figures, compared

Calculated by Radon411

CDC's largest figure for Logan County rests on 9 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 11.1 points and no rank or comparison is drawn from it. Results reached as high as 3.7 pCi/L, with a middle value of 1.4 pCi/L.

The nearest counties with a figure are Raleigh County (38 miles away) at 16.7%, Kanawha County (41 miles away) at 20.6% and Cabell County (44 miles away) at 16.6%. 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 Logan County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

West Virginia, the United States and the counties around Logan 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
Lincoln County, WVborders it1118.2%1.9 pCi/L
Boone County, WVborders it714.3%0.1 pCi/L
Mingo County, WVborders it50.0%1.0 pCi/L
The nearest West Virginia counties to Logan County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Raleigh County38 mi4216.7%1.4 pCi/L
Kanawha County41 mi24720.6%2.2 pCi/L
Cabell County44 mi14516.6%2.0 pCi/L
Putnam County47 mi5223.1%1.5 pCi/L
Mercer County54 mi10133.7%2.1 pCi/L
Greenbrier County81 mi17652.3%4.5 pCi/L
Wood County98 mi90515.9%1.8 pCi/L
Tyler County126 mi3522.9%1.8 pCi/L
Logan 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 201790.0%1.4 pCi/L3.7 pCi/L37.5%Level
2007 to 201690.0%1.4 pCi/L3.7 pCi/L37.3%Level
2006 to 201580.0%1.1 pCi/L3.7 pCi/L37.7%Level
2005 to 201480.0%1.1 pCi/L3.7 pCi/L37.3%First on file

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

Logan County, Geology

The ground under Logan County

Predicted

USGS's geologic map puts all of Logan County's mapped land in one class: low radon potential. All 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 Logan County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Cumberland PlateauPennsylvanian sandstone, siltstone, shale, and coalLow8100%

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

Logan County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Logan County's is. Of the 4 counties that border it, 3 have more moderate-potential ground, Lincoln County the most at 90.0%.

Share of land by USGS radon potential: Logan County, the 4 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Logan CountyZone 3100%NoneNone
Mingo CountyZone 398.8%1.2%None
Boone CountyZone 398.2%1.8%None
Lincoln CountyZone 210.0%90.0%None
Wyoming CountyZone 3100%NoneNone
West Virginia55 counties, pooled by land areaVaries14.0%67.3%18.7%

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

Local help

Logan County, Local resources

Radon testing and mitigation in Logan County

What West Virginia's program says
Phone
304-352-5039
Email
Radon@wv.gov
Licensing of radon professionals
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.

What it means

Logan County, Questions

Questions about radon in Logan County

Are radon levels high in Logan County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Logan County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.4 pCi/L. Of the 8 nearest counties with a figure, within 126 miles, the share of tests at or above 4 pCi/L runs from 15.9% to 52.3%.

Which counties border Logan County?

Logan County borders 4 counties: Mingo County, Boone County, Lincoln County and Wyoming County.

Products

Logan County, Products

Testing a home in Logan County

No CDC figure names Logan County; the nearest county with one, Raleigh County (38 miles away), reported 16.7% 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 Logan County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Logan County homes, compared

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Logan County, Bordering counties

Counties bordering Logan County

Calculated by Radon411

Logan County, Cities and towns

Cities and towns in Logan County

Logan County has been losing residents: from 32,514 in 2020 to 30,375 on July 1, 2025, a fall of 6.6% by the Census Bureau's estimates. That works out to 67 people per square mile of land. No town dominates: Logan, the largest, has 1,312 residents, 4.3% of the total. Together its 5 incorporated places hold 11.9% of those residents; the other 88.1% live outside any of them. Reported testing is thin here: 9 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 Logan to Mitchell Heights, CDC publishes no figure by town: each reads Logan County's.

The cities and towns in Logan County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Logan1,312−8.3%4.3%
Chapmanville936−8.1%3.1%
Man711−8.0%2.3%
West Logan369−7.5%1.2%
Mitchell Heights291−6.1%1.0%

5 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).

Logan County, Homes

Homes in Logan County

Of Logan County's 14,806 homes, 71% are detached houses, against 71% across West Virginia; 23% are mobile homes. Half of its homes were built before 1981, close to West Virginia's 1976: 30% date from before 1960 and 18% from 2000 or later. Owners live in 77% of the occupied homes (West Virginia: 74%), so for most households a test and a fix are their own to order.

Homes in Logan County, West Virginia, 2019 to 2023
HomesLogan CountyWest Virginia
Housing units14,806859,653
Detached houses71%71%
In buildings of 5 or more4%8%
Mobile homes23%14%
Built before 196030%33%
Built since 200018%18%
Middle year built19811976
Owner-occupied77%74%

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