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Radon Levels in Vance County, North Carolina

EPA puts Vance County in Zone 2, its middle radon zone, and only 1 radon test from it is on file with CDC (2021). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Share at 4+ pCi/L

    14.7%

    7.9 pts below NC

    Vance
    14.7%
    NC
    22.6%

    109 tests, 2008 to 2017

  • Median result

    1.5pCi/L

    Below action level

    Vance
    1.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    109

    56th of 75 by tests

    Vance
    109
    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

    48 of 75

    Middle half

    Vance
    14.7%
    Transylvania
    47.8%

    By share, of 75 with 30+ tests

Read a result for Vance County

Starts at Vance County's median, 1.5 pCi/L

1.5pCi/L

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

EPA’s reading of 1.5 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. Vance County's median reported result, 2008 to 2017.

The data

Vance County, At a glance

Vance County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Vance 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 63% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Vance County, 2021

Share of reported tests at or above 4 pCi/L, by year, Vance County
Share of reported tests at or above 4 pCi/L, by year, Vance County
YearShare of reported tests at or above 4 pCi/L
201425.0%
202010.0%
20210.0%

2021: 0.0%. Across these years the share ran from 0.0% to 25.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 1 test was reported to CDC for Vance County over 2021, 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: 2021. Measured data period: 2005 to 2021 (every CDC figure on file).

How to read these figures

Vance County, Compared

Vance County radon figures, compared

Calculated by Radon411

Vance County reports fewer high tests than North Carolina overall. 14.7% of its 109 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 7.9 points below the 22.6% pooled from 99 North Carolina counties.

The newest figure, in 2021, counts only 1 test (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 109-test figure.

Ordered from highest share down, it comes 48th of 75 North Carolina counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Vance County sits 21.0 points below it.

Next door, the shares run from 10.5% in Granville County to 42.7% in Warren County, with Granville County below Vance County. Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 14.7% share point the same way here.

Half the tests came in under 1.5 pCi/L and half over it; the single highest reached 14.2 pCi/L. The rest split 62.4% under 2 pCi/L and 22.9% from 2 to 4 (North Carolina: 55.6% and 21.8%).

The busiest year on file was 2014, with 16 tests reported; the quietest, 2021, had 1.

Vance County against North Carolina, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Vance County
Vance County10914.7%1.5 pCi/LThis county
North Carolina, pooled99 counties, pooled73,13922.6%Not pooled+7.9 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+21.0 points
Transylvania Countyhighest in the state3,86247.8%3.7 pCi/L+33.1 points
Nash Countylowest in the state300.0%0.2 pCi/L−14.7 points
Warren County, NCborders it8242.7%3.0 pCi/L+28.0 points
Mecklenburg County, VAborders it6637.9%3.0 pCi/L+23.2 points
Franklin County, NCborders it20419.1%1.4 pCi/L+4.4 points
Granville County, NCborders it15310.5%0.8 pCi/L−4.2 points
Where Vance County's reported results fell, 2008 to 2017, laboratory, beside North Carolina and the United States
ResultVance County testsVance County shareNorth Carolina shareU.S. shareAgainst North Carolina
Under 2 pCi/L6862.4%55.6%39.6%+6.8 points
2 to 4 pCi/L2522.9%21.8%24.7%+1.1 points
4 pCi/L and above1614.7%22.6%35.7%−7.9 points
Vance 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
Davie County43 of 7569417.4%1.7 pCi/L
Person County44 of 7519017.4%1.3 pCi/L
Macon County45 of 751,35417.1%1.4 pCi/L
Madison County46 of 7522816.7%1.3 pCi/L
Caswell County47 of 754714.9%1.6 pCi/L
Vance County48 of 7510914.7%1.5 pCi/L
Union County49 of 7583611.2%1.1 pCi/L
Chatham County50 of 7558710.9%1.1 pCi/L
Orange County51 of 751,09510.7%1.1 pCi/L
Granville County52 of 7515310.5%0.8 pCi/L
Wake County53 of 759,6949.6%1.0 pCi/L
Vance County radon tests by year, against North Carolina's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNorth Carolina, pooledChange from the row before
202110.0%1.0 pCi/L1.0 pCi/L14.9%−10.0 points
20201010.0%0.9 pCi/L9.0 pCi/L21.1%−15.0 points
20141625.0%1.0 pCi/L10.3 pCi/L21.9%First on file

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

Vance County, Geology

The ground under Vance County

Predicted

USGS's geologic map splits Vance County: 63.3% of its land is moderate radon potential and 36.7% low. The map puts 63.2% of Vance County in the area it calls Raleigh Belt and 36.7% in Carolina Slate Belt. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 6, in the low band (5 to 8).

USGS's geologic areas under Vance County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Raleigh BeltProterozoic through Cambrian biotite gneiss and mica schist.Moderate1163.2%
Carolina Slate BeltFelsic metavolcanics, intermediate volcanics, metamudstone, argillite, and epiclastic rocks.Low636.7%

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

Vance County beside the ground around it

Across North Carolina 1.3% of the land is rated high; none of Vance County's is. Of the 4 counties that border it, 1 has more high-potential ground, Mecklenburg County, VA the most at 38.4%.

Share of land by USGS radon potential: Vance County, the 4 counties bordering it and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Vance CountyZone 236.7%63.3%None
Granville CountyZone 387.8%12.2%None
Warren CountyZone 2None100%None
Franklin CountyZone 20.2%99.8%None
Mecklenburg County, VAZone 20.2%61.4%38.4%
North Carolina100 counties, pooled by land areaVaries64.8%33.0%1.3%

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

What it means

Vance County, Questions

Questions about radon in Vance County

Are radon levels high in Vance County?

In 2021, 0.0% of the radon tests reported to CDC for Vance 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, 47 reported a higher share; pooled, the state comes to 22.6%.

Which counties border Vance County?

Vance County borders 4 counties: Granville County, NC, Warren County, NC, Franklin County, NC and Mecklenburg County, VA.

Products

Vance County, Products

Testing a home in Vance County

In Vance County, 14.7% of 109 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 Vance County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Vance County homes, compared

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Vance County, Bordering counties

Counties bordering Vance County

Calculated by Radon411

Vance County, Cities and towns

Cities and towns in Vance County

Vance County's population has barely moved since 2020: 42,638 residents on July 1, 2025 against 42,554 then, by the Census Bureau's estimates. That works out to 169 people per square mile of land. Its largest town, Henderson, has 15,013 residents, 35.2% of the total. Together its 3 incorporated places hold 35.7% of those residents; the other 64.3% live outside any of them. Reported testing is thin here: 109 tests over 2008 to 2017, or 2.6 for every 1,000 residents (2025 estimate), where North Carolina as a whole comes to 6.5.

From Henderson to Middleburg, CDC publishes no figure by town: each reads Vance County's.

The cities and towns in Vance County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Henderson15,013−0.8%35.2%
Kittrell127−0.8%0.3%
Middleburg98Level0.2%

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).

Vance County, Homes

Homes in Vance County

Of Vance County's 19,423 homes, 62% are detached houses, against 65% across North Carolina; 25% are mobile homes. The homes are older than North Carolina's as a whole: half were built before 1981 (1990 for North Carolina), and 21% date from before 1960. 57% of occupied homes are lived in by their owner (North Carolina: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Vance County, North Carolina, 2019 to 2023
HomesVance CountyNorth Carolina
Housing units19,4234,815,195
Detached houses62%65%
In buildings of 5 or more6%14%
Mobile homes25%11%
Built before 196021%14%
Built since 200017%33%
Middle year built19811990
Owner-occupied57%66%

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