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Radon Levels in Barbour County, West Virginia

EPA puts Barbour County in Zone 2, its middle radon zone, and only 12 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

    36.9%

    Preston County

    Preston
    36.9%
    Taylor
    28.1%

    4 of 6 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    28.1%

    Taylor County, 14 miles

    Taylor
    28.1%
    WV
    37.5%

    Share at 4+ pCi/L, 32 tests, 2008 to 2017

  • Ground above low

    100.0%

    14.0 pts above WV

    Barbour
    100.0%
    WV
    86.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    12

    Too few for a share

    Barbour
    12
    Needed
    30

    2008 to 2017, laboratory

  • 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

Read a result for Barbour 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

Barbour County, At a glance

Barbour County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Barbour 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 Barbour County, 2008 to 2017, laboratory

CDC holds 12 reported tests for Barbour County over the 2008 to 2017 laboratory totals, with a median of 2.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Barbour County beside the counties around it is how this page reads it.

What these figures count

Only 12 tests were reported to CDC for Barbour 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

Barbour County, Compared

Barbour County radon figures, compared

Calculated by Radon411

CDC's largest figure for Barbour County rests on 12 tests over the 2008 to 2017 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 8.3 points and no rank or comparison is drawn from it. Results reached as high as 13.8 pCi/L, with a middle value of 2.0 pCi/L.

Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Preston County reported the largest share at or above 4 pCi/L, 36.9%, and Taylor County the smallest, 28.1%, with Randolph County at 36.4% and Harrison County at 36.4% between. Farther out, Marion County (29 miles away) at 29.1%, Monongalia County (34 miles away) at 19.0% and Grant County (43 miles away) at 9.8% 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 Barbour County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

West Virginia, the United States and the counties around Barbour 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
Preston County, WVborders it17636.9%2.5 pCi/L
Randolph County, WVborders it3336.4%2.5 pCi/L
Harrison County, WVborders it18736.4%2.6 pCi/L
Taylor County, WVborders it3228.1%2.2 pCi/L
Tucker County, WVborders it1827.8%1.8 pCi/L
Upshur County, WVborders it2920.7%2.6 pCi/L
The nearest West Virginia counties to Barbour County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Taylor County14 mi3228.1%2.2 pCi/L
Harrison County23 mi18736.4%2.6 pCi/L
Randolph County26 mi3336.4%2.5 pCi/L
Marion County29 mi24429.1%2.6 pCi/L
Preston County29 mi17636.9%2.5 pCi/L
Monongalia County34 mi1,17619.0%1.9 pCi/L
Grant County43 mi1649.8%1.1 pCi/L
Pendleton County47 mi5530.9%2.5 pCi/L
Barbour 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 20171225.0%2.0 pCi/L13.8 pCi/L37.5%Level
2007 to 20161225.0%2.0 pCi/L13.8 pCi/L37.3%−2.3 points
2006 to 20151127.3%2.1 pCi/L13.8 pCi/L37.7%Level
2005 to 20141127.3%2.1 pCi/L13.8 pCi/L37.3%First on file

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

Barbour County, Geology

The ground under Barbour County

Predicted

USGS's geologic map puts all of Barbour County's mapped land in one class: moderate radon potential. The map puts 70.6% of Barbour County in the area it calls Central Allegheny Plateau and 29.4% in Eastern Allegheny Plateau and Mtns. USGS gives both a radon index of 10, in the moderate band (9 to 11).

USGS's geologic areas under Barbour County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Allegheny PlateauPermian and Pennsylvanian shale, siltstone, sandstone, minor limestone.Moderate1070.6%
Eastern Allegheny Plateau and MtnsDevonian-Pennsylvanian shale, siltstone, sandstone, minor limestone and coalModerate1029.4%

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

Barbour County beside the ground around it

Across West Virginia 18.7% of the land is rated high; none of Barbour County's is. Of the 6 counties that border it, 2 have more high-potential ground, Randolph County the most at 2.9%.

Share of land by USGS radon potential: Barbour County, the 6 counties bordering it and West Virginia
AreaEPA zoneLow potentialModerate potentialHigh potential
Barbour CountyZone 2None100%None
Taylor CountyZone 2None100%None
Upshur CountyZone 2None100%None
Harrison CountyZone 2None100%None
Tucker CountyZone 2None99.8%0.2%
Randolph CountyZone 2None97.1%2.9%
Preston CountyZone 1None100%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

Barbour County, Questions

Questions about radon in Barbour County

Are radon levels high in Barbour County?

Over the 2008 to 2017 laboratory totals, 25.0% of the radon tests reported to CDC for Barbour County, West Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Preston County reported the largest share at or above 4 pCi/L, 36.9%, and Taylor County the smallest, 28.1%, with Randolph County at 36.4% and Harrison County at 36.4% between.

Which counties border Barbour County?

Barbour County borders 6 counties: Taylor County, Upshur County, Harrison County, Tucker County, Randolph County and Preston County.

Products

Barbour County, Products

Testing a home in Barbour County

No CDC figure names Barbour County; the nearest county with one, Taylor County (14 miles away), reported 28.1% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Barbour County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Barbour County homes, compared

Explore

Barbour County, Bordering counties

Counties bordering Barbour County

Calculated by Radon411

Barbour County, Cities and towns

Cities and towns in Barbour County

Barbour County's population has barely moved since 2020: 15,414 residents on July 1, 2025 against 15,463 then, by the Census Bureau's estimates. That works out to 45 people per square mile of land. No town dominates: Philippi, the largest, has 2,846 residents, 18.5% of the total. Together its 3 incorporated places hold 32.7% of those residents; the other 67.3% live outside any of them. Reported testing is thin here: 12 tests over 2008 to 2017, or 0.8 for every 1,000 residents (2025 estimate), where West Virginia as a whole comes to 5.7.

From Philippi to Junior, CDC publishes no figure by town: each reads Barbour County's.

The cities and towns in Barbour County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Philippi2,846−0.9%18.5%
Belington1,809−0.1%11.7%
Junior380−1.6%2.5%

3 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).

Barbour County, Homes

Homes in Barbour County

Of Barbour County's 7,131 homes, 74% are detached houses, against 71% across West Virginia; 18% are mobile homes. Half of its homes were built before 1975, close to West Virginia's 1976: 37% date from before 1960 and 17% 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 Barbour County, West Virginia, 2019 to 2023
HomesBarbour CountyWest Virginia
Housing units7,131859,653
Detached houses74%71%
In buildings of 5 or more3%8%
Mobile homes18%14%
Built before 196037%33%
Built since 200017%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.