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Radon Levels in Halifax County, North Carolina

EPA puts Halifax County in Zone 3, its lowest radon zone, and only 14 radon tests from it are on file with CDC (2021). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    42.4%

    19.8 pts above NC

    Halifax
    42.4%
    NC
    22.6%

    59 tests, 2008 to 2017

  • Median result

    2.6pCi/L

    Below action level

    Halifax
    2.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    59

    66th of 75 by tests

    Halifax
    59
    Wake
    9,694

    Reported to CDC before any fix, 2008 to 2017

  • 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

  • Rank in NC

    8 of 75

    Top quarter

    Halifax
    42.4%
    Transylvania
    47.8%

    By share, of 75 with 30+ tests

Read a result for Halifax County

Starts at Halifax County's median, 2.6 pCi/L

2.6pCi/L

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

EPA’s reading of 2.6 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Halifax County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Halifax County, At a glance

Halifax County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Halifax 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 90% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Halifax County, 2021

Share of reported tests at or above 4 pCi/L, by year, Halifax County
Share of reported tests at or above 4 pCi/L, by year, Halifax County
YearShare of reported tests at or above 4 pCi/L
201413.6%
202045.0%
20217.1%

2021: 7.1%. Across these years the share ran from 7.1% to 45.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 14 tests were reported to CDC for Halifax 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

Halifax County, Compared

Halifax County radon figures, compared

Calculated by Radon411

In Halifax County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (25 of 59) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 6.7 points higher. Across 99 North Carolina counties pooled together, 22.6% of tests reached that level, so Halifax County runs 19.8 points above its state.

The newest figure, in 2021, counts only 14 tests (7.1% at or above 4 pCi/L), too few to compare, so this reading uses the 59-test figure.

Of 4 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 3 a smaller one; the spread is 0.0% (Nash County) to 42.7% (Warren County). By share, Halifax County is 8th of 75 North Carolina counties with 30 or more tests for the same period.

Half the tests came in under 2.6 pCi/L and half over it; the single highest reached 37.6 pCi/L. Below the action level, 26 tests (44.1%) came in under 2 pCi/L, against 55.6% statewide, and 8 tests (13.6%) fell between 2 and 4, against 21.8% statewide.

The reported tests do not follow EPA's Zone 3 label for Halifax County (predicted average under 2 pCi/L): 42.4% of them reached 4 pCi/L, more than a low-potential zone suggests. USGS geology rates 90% of the county's land low radon potential.

The busiest year on file was 2014, with 22 tests reported; the quietest, 2021, had 14.

Halifax County against North Carolina, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Halifax County
Halifax County5942.4%2.6 pCi/LThis county
North Carolina, pooled99 counties, pooled73,13922.6%Not pooled−19.8 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−6.7 points
Transylvania Countyhighest in the state3,86247.8%3.7 pCi/L+5.4 points
Columbus Countylowest in the state310.0%0.1 pCi/L−42.4 points
Warren County, NCborders it8242.7%3.0 pCi/L+0.3 points
Northampton County, NCborders it6240.3%3.4 pCi/L−2.1 points
Bertie County, NCborders it425.0%1.1 pCi/L−17.4 points
Franklin County, NCborders it20419.1%1.4 pCi/L−23.3 points
Edgecombe County, NCborders it90.0%0.1 pCi/L−42.4 points
Nash County, NCborders it300.0%0.2 pCi/L−42.4 points
Martin County, NCborders it40.0%0.6 pCi/L−42.4 points
Where Halifax County's reported results fell, 2008 to 2017, laboratory, beside North Carolina and the United States
ResultHalifax County testsHalifax County shareNorth Carolina shareU.S. shareAgainst North Carolina
Under 2 pCi/L2644.1%55.6%39.6%−11.5 points
2 to 4 pCi/L813.6%21.8%24.7%−8.2 points
4 pCi/L and above2542.4%22.6%35.7%+19.8 points
Halifax 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
Wilkes County3 of 7540244.3%3.5 pCi/L
Swain County4 of 7511644.0%3.4 pCi/L
Cherokee County5 of 751,04543.2%3.4 pCi/L
Clay County6 of 7532343.0%3.0 pCi/L
Warren County7 of 758242.7%3.0 pCi/L
Halifax County8 of 755942.4%2.6 pCi/L
Graham County9 of 756942.0%3.0 pCi/L
Henderson County10 of 754,09341.8%3.3 pCi/L
Alleghany County11 of 7528541.1%3.3 pCi/L
Northampton County12 of 756240.3%3.4 pCi/L
Cleveland County13 of 7551139.5%2.8 pCi/L
Halifax County radon tests by year, against North Carolina's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNorth Carolina, pooledChange from the row before
2021147.1%0.1 pCi/L7.0 pCi/L14.9%−37.9 points
20202045.0%2.8 pCi/L27.0 pCi/L21.1%+31.4 points
20142213.6%1.3 pCi/L9.0 pCi/L21.9%First on file

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

Halifax County, Geology

The ground under Halifax County

Predicted

Most of the ground under Halifax County is one class on USGS's geologic map: 89.8% of its land is low radon potential, with 10.2% moderate. The map puts 61.4% of Halifax County in the area it calls Inner Coastal Plain and 28.4% in Eastern Slate Belt, with one smaller area beside them. USGS gives both a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Halifax County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Inner Coastal PlainFossiliferous clay and sand, shelly sand, sandy marl, and limestone.Low861.4%
Eastern Slate BeltProterozoic to Cambrian metamudstone and argillite, interbedded with metamorphosed sandstone, conglomerate, and volcanic rock.Low828.4%
Raleigh BeltProterozoic through Cambrian biotite gneiss and mica schist.Moderate1110.2%

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

Halifax County beside the ground around it

Across North Carolina 1.3% of the land is rated high; none of Halifax County's is. Of the 7 counties that border it, 3 have more moderate-potential ground, Warren County the most at 100%.

Share of land by USGS radon potential: Halifax County, the 7 counties bordering it and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Halifax CountyZone 389.8%10.2%None
Northampton CountyZone 397.5%2.5%None
Edgecombe CountyZone 3100%NoneNone
Warren CountyZone 2None100%None
Nash CountyZone 386.8%13.2%None
Martin CountyZone 3100%NoneNone
Franklin CountyZone 20.2%99.8%None
Bertie CountyZone 399.8%NoneNone
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

Halifax County, Local resources

Radon testing and mitigation in Halifax 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

Halifax County, Questions

Questions about radon in Halifax County

Are radon levels high in Halifax County?

In 2021, 7.1% of the radon tests reported to CDC for Halifax County, North Carolina were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of 75 North Carolina counties with 30 or more tests for the same period, 7 reported a higher share; pooled, the state comes to 22.6%.

Which counties border Halifax County?

Halifax County borders 7 counties: Northampton County, Edgecombe County, Warren County, Nash County, Martin County, Franklin County and Bertie County.

Products

Halifax County, Products

Testing a home in Halifax County

In Halifax County, 42.4% of 59 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 22.6% pooled across North Carolina. 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 Halifax County.

Test kits and monitors3

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Best radon monitors for Halifax County homes, compared

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Halifax County, Bordering counties

Counties bordering Halifax County

Calculated by Radon411

Halifax County, Cities and towns

Cities and towns in Halifax County

About 46,534 people live in Halifax County by the Census Bureau's estimate for July 1, 2025, 1,867 fewer than in 2020 (−3.9%). That works out to 64 people per square mile of land. Its largest town, Roanoke Rapids, has 14,386 residents, 30.9% of the total. Together its 7 incorporated places hold 43.1% of those residents; the other 56.9% live outside any of them. Reported testing is thin here: 59 tests over 2008 to 2017, or 1.3 for every 1,000 residents (2025 estimate), where North Carolina as a whole comes to 6.5.

From Roanoke Rapids to Halifax, CDC publishes no figure by town: each reads Halifax County's.

The cities and towns in Halifax County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Roanoke Rapids14,386−5.3%30.9%
Enfield1,777−4.4%3.8%
Scotland Neck1,586−3.8%3.4%
Weldon1,374−4.8%3.0%
Littleton535−4.1%1.1%
Hobgood256−4.1%0.6%
Halifax157−4.3%0.3%

7 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).

Halifax County, Homes

Homes in Halifax County

Of Halifax County's 24,849 homes, 63% 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 1979 (1990 for North Carolina), and 27% date from before 1960. 63% 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 Halifax County, North Carolina, 2019 to 2023
HomesHalifax CountyNorth Carolina
Housing units24,8494,815,195
Detached houses63%65%
In buildings of 5 or more5%14%
Mobile homes25%11%
Built before 196027%14%
Built since 200015%33%
Middle year built19791990
Owner-occupied63%66%

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