
Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
Locations and reports
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
2 of 5 neighbours have 30+ tests, 2008 to 2017
Nearest county
20.6%
Kanawha County, 24 miles
Share at 4+ pCi/L, 247 tests, 2008 to 2017
Ground above low
1.8%
84.2 pts below WV
Share of land USGS rates moderate or high potential
Tests reported
7
Too few for a share
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Boone County
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
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
Predicted: EPA radon zone
USGS geologic potential: Low across 98% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
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.
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).
Boone County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Boone County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Cumberland Plateau | Pennsylvanian sandstone, siltstone, shale, and coal | Low | 8 | 98.2% |
| Central Allegheny Plateau | Permian and Pennsylvanian shale, siltstone, sandstone, minor limestone. | Moderate | 10 | 1.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Boone County, Local resources
West Virginia residents can request a free Radon Test Kit by emailing Radon@wv.gov or calling 304-352-5039
Complete listings of professionals licensed to perform Asbestos, Lead, Radon and Clandestine Drug Laboratory Remediation activities in West Virginia.
What it means
Boone County, Questions
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%.
Boone County borders 5 counties: Logan County, Kanawha County, Lincoln County, Wyoming County and Raleigh County.
Products
Boone County, Products
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 monitors: 1 of 3
Explore
Boone County, Bordering counties
33.3%at or above 4 pCi/L
Median 0.8 pCi/L · 3 tests
20.6%at or above 4 pCi/L
Median 2.2 pCi/L · 247 tests
18.2%at or above 4 pCi/L
Median 1.9 pCi/L · 11 tests
16.7%at or above 4 pCi/L
Median 1.4 pCi/L · 42 tests
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 9 tests
Boone County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Madison | 2,678 | −7.5% | 13.2% |
| Danville | 630 | −6.7% | 3.1% |
| Whitesville | 340 | −7.9% | 1.7% |
| Sylvester | 149 | −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
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 | Boone County | West Virginia |
|---|---|---|
| Housing units | 10,167 | 859,653 |
| Detached houses | 68% | 71% |
| In buildings of 5 or more | 2% | 8% |
| Mobile homes | 26% | 14% |
| Built before 1960 | 31% | 33% |
| Built since 2000 | 15% | 18% |
| Middle year built | 1975 | 1976 |
| Owner-occupied | 79% | 74% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.