Skip to content
RADON411

Locations and reports

Radon Levels in Stokes County, North Carolina

EPA puts Stokes County in Zone 2, its middle radon zone, and only 5 radon tests from it are on file with CDC (2022). 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

    21.6%

    1.0 pts below NC

    Stokes
    21.6%
    NC
    22.6%

    592 tests, 2008 to 2017

  • Median result

    1.8pCi/L

    Below action level

    Stokes
    1.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    592

    32nd of 75 by tests

    Stokes
    592
    Wake
    9,694

    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 NC

    37 of 75

    Middle half

    Stokes
    21.6%
    Transylvania
    47.8%

    By share, of 75 with 30+ tests

Read a result for Stokes County

Starts at Stokes County's median, 1.8 pCi/L

1.8pCi/L

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

EPA’s reading of 1.8 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Stokes County's median reported result, 2008 to 2017.

Interpret this reading

The data

Stokes County, At a glance

Stokes County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Stokes 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 90% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Stokes County, 2022

Share of reported tests at or above 4 pCi/L, by year, Stokes County
Share of reported tests at or above 4 pCi/L, by year, Stokes County
YearShare of reported tests at or above 4 pCi/L
201428.9%
202019.4%
202142.9%
20220.0%

2022: 0.0%. Across these years the share ran from 0.0% to 42.9%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 5 tests were reported to CDC for Stokes County over 2022, 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: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).

How to read these figures

Stokes County, Compared

Stokes County radon figures, compared

Calculated by Radon411

Stokes County's 592 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.8 pCi/L and a maximum of 38.8 pCi/L, and 21.6% reached 4 pCi/L. North Carolina as a whole (99 North Carolina counties, pooled) comes to 22.6%: 1.0 points higher than here.

The newest figure, in 2022, counts only 5 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 592-test figure.

Among its state's counties it ranks 37th of 75 North Carolina counties with 30 or more tests for the same period. Statewide for the same period, Transylvania County reported the highest share (47.8%) and Nash County the lowest (0.0%).

Below the action level, 317 tests (53.5%) came in under 2 pCi/L, against 55.6% statewide, and 147 tests (24.8%) fell between 2 and 4, against 21.8% statewide. The busiest year on file was 2014, with 76 tests reported; the quietest, 2022, had 5.

EPA's 1993 zone map puts Stokes County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 90% of the county's land moderate radon potential.

Next door, the shares run from 7.9% in Guilford County to 54.7% in Patrick County, VA, with Guilford County below Stokes County.

CDC also counts 8 tests taken after mitigation in Stokes County for the same period: tests in homes where a fix was already in.

Stokes County against North Carolina, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Stokes County
Stokes County59221.6%1.8 pCi/LThis county
North Carolina, pooled99 counties, pooled73,13922.6%Not pooled+1.0 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+14.1 points
Transylvania Countyhighest in the state3,86247.8%3.7 pCi/L+26.2 points
Nash Countylowest in the state300.0%0.2 pCi/L−21.6 points
Patrick County, VAborders it5354.7%5.3 pCi/L+33.1 points
Henry County, VAborders it11535.7%2.7 pCi/L+14.1 points
Surry County, NCborders it85533.3%2.4 pCi/L+11.7 points
Forsyth County, NCborders it6,27328.9%2.3 pCi/L+7.3 points
Rockingham County, NCborders it83527.3%2.1 pCi/L+5.7 points
Guilford County, NCborders it6,8707.9%0.9 pCi/L−13.7 points
Where Stokes County's reported results fell, 2008 to 2017, laboratory, beside North Carolina and the United States
ResultStokes County testsStokes County shareNorth Carolina shareU.S. shareAgainst North Carolina
Under 2 pCi/L31753.5%55.6%39.6%−2.1 points
2 to 4 pCi/L14724.8%21.8%24.7%+3.0 points
4 pCi/L and above12821.6%22.6%35.7%−1.0 points
Stokes County ranked among the 75 North Carolina counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Rutherford County32 of 7551125.6%2.4 pCi/L
Davidson County33 of 751,26525.5%1.8 pCi/L
Stanly County34 of 7522925.3%2.2 pCi/L
Catawba County35 of 751,25924.8%2.0 pCi/L
Iredell County36 of 751,14621.8%1.8 pCi/L
Stokes County37 of 7559221.6%1.8 pCi/L
Montgomery County38 of 7510320.4%1.5 pCi/L
Moore County39 of 759919.2%1.3 pCi/L
Franklin County40 of 7520419.1%1.4 pCi/L
Gaston County41 of 7559319.1%1.5 pCi/L
Rowan County42 of 7562617.7%1.4 pCi/L
Stokes County radon tests by year, against North Carolina's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNorth Carolina, pooledChange from the row before
202250.0%1.0 pCi/L3.0 pCi/L10.7%−42.9 points
20211442.9%2.5 pCi/L10.0 pCi/L14.9%+23.5 points
20203119.4%1.0 pCi/L16.0 pCi/L21.1%−9.5 points
20147628.9%2.0 pCi/L13.0 pCi/L21.9%First on file

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

Stokes County, Geology

The ground under Stokes County

Predicted

Most of the ground under Stokes County is one class on USGS's geologic map: 89.7% of its land is moderate radon potential, with 0.1% high and 10.3% low. The map puts 81.1% of Stokes County in the area it calls Inner Piedmont Belt and 10.3% in Dan River Basin, with one smaller area beside them. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 8, in the low band (5 to 8).

USGS's geologic areas under Stokes County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Inner Piedmont BeltProterozoic through Cambrian biotite gneiss and schist, and mica schist.Moderate1181.1%
Dan River BasinSandstone, siltstone and shale.Low810.3%
Milton BeltProterozoic-Cambrian biotite gneiss and felsic mica gneiss.Moderate118.6%

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

Stokes County beside the ground around it

On high-potential ground Stokes County is close to North Carolina as a whole: 0.1% of its land against 1.3%. Of the 6 counties that border it, 2 have more high-potential ground, Henry County, VA the most at 97.9%.

Share of land by USGS radon potential: Stokes County, the 6 counties bordering it and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Stokes CountyZone 210.3%89.7%0.1%
Forsyth CountyZone 223.7%76.3%None
Patrick County, VAZone 1None55.7%44.3%
Henry County, VAZone 1None2.1%97.9%
Surry CountyZone 2None100%None
Rockingham CountyZone 119.2%80.7%None
Guilford CountyZone 390.9%9.1%None
North Carolina100 counties, pooled by land areaVaries64.8%33.0%1.3%

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

Local help

Stokes County, Local resources

Radon testing and mitigation in Stokes County

What North Carolina's program says
Licensing of radon professionals
The North Carolina Radon Program is presently developing a Radon Proficiency Program as directed by Session Law 2023-91 House Bill 782 .

What it means

Stokes County, Questions

Questions about radon in Stokes County

Are radon levels high in Stokes County?

In 2022, 0.0% of the radon tests reported to CDC for Stokes County, North Carolina were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.0 pCi/L. Of 75 North Carolina counties with 30 or more tests for the same period, 36 reported a higher share; pooled, the state comes to 22.6%.

Which counties border Stokes County?

Stokes County borders 6 counties: Forsyth County, NC, Patrick County, VA, Henry County, VA, Surry County, NC, Rockingham County, NC and Guilford County, NC.

Products

Stokes County, Products

Testing a home in Stokes County

In Stokes County, 21.6% of 592 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 22.6% pooled across North Carolina. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Stokes County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Stokes County homes, compared

Explore

Stokes County, Bordering counties

Counties bordering Stokes County

Calculated by Radon411

Stokes County, Cities and towns

Cities and towns in Stokes County

The Census Bureau estimates 46,126 residents in Stokes County for July 1, 2025, 1,561 more than in 2020 (+3.5%). That works out to 103 people per square mile of land. King, the largest place on its list (7,977 residents in all), extends beyond Stokes County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 592 reported tests for 2008 to 2017 come to 12.8 for every 1,000 residents (2025 estimate), against 6.5 for North Carolina.

From King to Danbury, CDC publishes no figure by town: each reads Stokes County's.

The cities and towns in Stokes County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Kingextends beyond Stokes County7,977+10.6%Counted whole
Tobaccovilleextends beyond Stokes County2,770+7.7%Counted whole
Walnut Cove1,609+1.7%3.5%
Danbury187+0.5%0.4%

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). A place that extends beyond Stokes County is counted whole, so it has no share.

Stokes County, Homes

Homes in Stokes County

Of Stokes County's 21,353 homes, 70% are detached houses, against 65% across North Carolina; 24% are mobile homes. Half of its homes were built before 1983, close to North Carolina's 1990: 13% date from before 1960 and 21% from 2000 or later. Owners live in 78% of the occupied homes (North Carolina: 66%), so for most households a test and a fix are their own to order.

Homes in Stokes County, North Carolina, 2019 to 2023
HomesStokes CountyNorth Carolina
Housing units21,3534,815,195
Detached houses70%65%
In buildings of 5 or more2%14%
Mobile homes24%11%
Built before 196013%14%
Built since 200021%33%
Middle year built19831990
Owner-occupied78%66%

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