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Radon Levels in Lenoir County, North Carolina

EPA puts Lenoir County in Zone 3, its lowest radon zone, and only 4 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

  • Highest bordering

    8.2%

    Wayne County

    Wayne
    8.2%
    Craven
    0.0%

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

  • Nearest county

    8.2%

    Wayne County, 22 miles

    Wayne
    8.2%
    NC
    22.6%

    Share at 4+ pCi/L, 49 tests, 2008 to 2017

  • Ground above low

    None

    34.2 pts below NC

    Lenoir
    0.0%
    NC
    34.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    21

    Too few for a share

    Lenoir
    21
    Needed
    30

    2007 to 2016, laboratory

  • 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

Read a result for Lenoir 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

Lenoir County, At a glance

Lenoir County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Lenoir 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Lenoir County, 2021

Share of reported tests at or above 4 pCi/L, by year, Lenoir County
Share of reported tests at or above 4 pCi/L, by year, Lenoir County
YearShare of reported tests at or above 4 pCi/L
20200.0%
20210.0%

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

What these figures count

Only 4 tests were reported to CDC for Lenoir 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

Lenoir County, Compared

Lenoir County radon figures, compared

Calculated by Radon411

CDC's largest figure for Lenoir County rests on 21 tests over the 2007 to 2016 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 4.8 points and no rank or comparison is drawn from it. Results reached as high as 2.9 pCi/L, with a middle value of 0.1 pCi/L.

Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Wayne County reported the largest share at or above 4 pCi/L, 8.2%, and Craven County the smallest, 0.0%, with Pitt County at 1.0% between. Farther out, Onslow County (37 miles away) at 2.7%, Johnston County (45 miles away) at 8.2% and Nash County (54 miles away) at 0.0% have figures too. Pooled across 99 North Carolina counties, 22.6% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Transylvania County reported the highest share (47.8%) and Nash County the lowest (0.0%). EPA's 1993 map puts Lenoir County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

North Carolina, the United States and the counties around Lenoir County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
North Carolina, pooled99 counties, pooled73,13922.6%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Transylvania Countyhighest in the state3,86247.8%3.7 pCi/L
Nash Countylowest in the state300.0%0.2 pCi/L
Wayne County, NCborders it498.2%0.6 pCi/L
Pitt County, NCborders it1011.0%0.1 pCi/L
Craven County, NCborders it1090.0%0.2 pCi/L
Jones County, NCborders it10.0%1.8 pCi/L
Greene County, NCborders it70.0%0.1 pCi/L
Duplin County, NCborders it50.0%0.1 pCi/L
The nearest North Carolina counties to Lenoir County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Wayne County22 mi498.2%0.6 pCi/L
Pitt County29 mi1011.0%0.1 pCi/L
Craven County32 mi1090.0%0.2 pCi/L
Onslow County37 mi1882.7%0.5 pCi/L
Johnston County45 mi6688.2%0.7 pCi/L
Nash County54 mi300.0%0.2 pCi/L
Carteret County62 mi410.0%0.1 pCi/L
Wake County68 mi9,6949.6%1.0 pCi/L
Lenoir County radon tests by year, against North Carolina's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNorth Carolina, pooledChange from the row before
202140.0%0.1 pCi/L0.1 pCi/L14.9%Level
202060.0%0.7 pCi/L1.6 pCi/L21.1%First on file

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

Lenoir County, Geology

The ground under Lenoir County

Predicted

USGS's geologic map puts all of Lenoir County's mapped land in one class: low radon potential. All of it lies in the area the map calls Inner Coastal Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Lenoir County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Inner Coastal PlainFossiliferous clay and sand, shelly sand, sandy marl, and limestone.Low8100%

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

Lenoir County beside the ground around it

Across North Carolina 1.3% of the land is rated high; none of Lenoir County's is. None of the 6 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Lenoir County, the 6 counties bordering it and North Carolina
AreaEPA zoneLow potentialModerate potentialHigh potential
Lenoir CountyZone 3100%NoneNone
Jones CountyZone 3100%NoneNone
Greene CountyZone 3100%NoneNone
Wayne CountyZone 3100%NoneNone
Duplin CountyZone 3100%NoneNone
Pitt CountyZone 3100%NoneNone
Craven CountyZone 398.0%NoneNone
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

Lenoir County, Questions

Questions about radon in Lenoir County

Are radon levels high in Lenoir County?

In 2021, 0.0% of the radon tests reported to CDC for Lenoir County, North Carolina were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Wayne County reported the largest share at or above 4 pCi/L, 8.2%, and Craven County the smallest, 0.0%, with Pitt County at 1.0% between.

Which counties border Lenoir County?

Lenoir County borders 6 counties: Jones County, Greene County, Wayne County, Duplin County, Pitt County and Craven County.

Products

Lenoir County, Products

Testing a home in Lenoir County

No CDC figure names Lenoir County; the nearest county with one, Wayne County (22 miles away), reported 8.2% 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 Lenoir County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Lenoir County homes, compared

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Lenoir County, Bordering counties

Counties bordering Lenoir County

Calculated by Radon411

Lenoir County, Cities and towns

Cities and towns in Lenoir County

The Census Bureau estimates 55,837 residents in Lenoir County for July 1, 2025, 775 more than in 2020 (+1.4%). That works out to 140 people per square mile of land. Its largest town, Kinston, has 19,705 residents, 35.3% of the total. Reported testing is thin here: 21 tests over 2007 to 2016, or 0.4 for every 1,000 residents (2025 estimate), where North Carolina as a whole comes to 6.3.

From Kinston to Pink Hill, CDC publishes no figure by town: each reads Lenoir County's.

The cities and towns in Lenoir County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Kinston19,705−0.3%35.3%
La Grange2,947+14.0%5.3%
Griftonextends beyond Lenoir County2,539+3.9%Counted whole
Pink Hill459+1.3%0.8%

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 Lenoir County is counted whole, so it has no share.

Lenoir County, Homes

Homes in Lenoir County

Of Lenoir County's 26,767 homes, 60% are detached houses, against 65% across North Carolina; 22% are mobile homes. The homes are older than North Carolina's as a whole: half were built before 1977 (1990 for North Carolina), and 23% date from before 1960. 59% 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 Lenoir County, North Carolina, 2019 to 2023
HomesLenoir CountyNorth Carolina
Housing units26,7674,815,195
Detached houses60%65%
In buildings of 5 or more9%14%
Mobile homes22%11%
Built before 196023%14%
Built since 200014%33%
Middle year built19771990
Owner-occupied59%66%

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