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
Radon Levels in Person County, North Carolina
EPA puts Person County in Zone 3, its lowest radon zone, and only 2 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
Share at 4+ pCi/L
17.4%
5.2 pts below NC
- Person
- 17.4%
- NC
- 22.6%
190 tests, 2008 to 2017
Median result
1.3pCi/L
Below action level
- Person
- 1.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
190
48th of 75 by tests
- Person
- 190
- Wake
- 9,694
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in NC
44 of 75
Middle half
- Person
- 17.4%
- Transylvania
- 47.8%
By share, of 75 with 30+ tests
Read a result for Person County
Starts at Person County's median, 1.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.3 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Person County's median reported result, 2008 to 2017.
The data
Person County, At a glance
Person County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 87% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Person County, 2021
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 5.6% |
| 2020 | 20.5% |
| 2021 | 0.0% |
2021: 0.0%. Across these years the share ran from 0.0% to 20.5%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 2 tests were reported to CDC for Person 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).
Person County, Compared
Person County radon figures, compared
Calculated by Radon411Person County's 190 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.3 pCi/L and a maximum of 94.8 pCi/L, and 17.4% reached 4 pCi/L. North Carolina as a whole (99 North Carolina counties, pooled) comes to 22.6%: 5.2 points higher than here.
The newest figure, in 2021, counts only 2 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 190-test figure.
Among its state's counties it ranks 44th 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, 125 tests (65.8%) came in under 2 pCi/L, against 55.6% statewide, and 32 tests (16.8%) fell between 2 and 4, against 21.8% statewide. The busiest year on file was 2020, with 39 tests reported; the quietest, 2021, had 2.
EPA's 1993 zone map puts Person County in Zone 3, a predicted county average under 2 pCi/L. USGS geology rates 87% of the county's land low radon potential.
Next door, the shares run from 4.3% in Durham County to 18.9% in Halifax County, VA, with Caswell County, Orange County and Granville County below Person County.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Person County, Geology
The ground under Person County
PredictedMost of the ground under Person County is one class on USGS's geologic map: 87.2% of its land is low radon potential, with 12.8% moderate. The map puts 87.2% of Person County in the area it calls Carolina Slate Belt and 12.8% in Milton Belt. USGS gives the first a radon index of 6, in the low band (5 to 8), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Carolina Slate Belt | Felsic metavolcanics, intermediate volcanics, metamudstone, argillite, and epiclastic rocks. | Low | 6 | 87.2% |
| Milton Belt | Proterozoic-Cambrian biotite gneiss and felsic mica gneiss. | Moderate | 11 | 12.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Person County beside the ground around it
Across North Carolina 1.3% of the land is rated high; none of Person County's is. Of the 5 counties that border it, 2 have more moderate-potential ground, Halifax County, VA the most at 99.8%.
The map rates the ground, not the air in any home.
Local help
Person County, Local resources
Radon testing and mitigation in Person County
- North Carolina Radon ProgramNorth Carolina Radon Program, run by NCDHHS, answers questions about testing, mitigation and the rules in North Carolina.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in North Carolina2 professionals are listed in North Carolina.
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
Person County, Questions
Questions about radon in Person County
Are radon levels high in Person County?
In 2021, 0.0% of the radon tests reported to CDC for Person 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, 43 reported a higher share; pooled, the state comes to 22.6%.
Which counties border Person County?
Person County borders 5 counties: Granville County, NC, Caswell County, NC, Durham County, NC, Halifax County, VA and Orange County, NC.
Products
Person County, Products
Testing a home in Person County
In Person County, 17.4% of 190 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 Person County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Corentium Home 2 battery digital radon monitor
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Person County, Bordering counties
Counties bordering Person County
Calculated by Radon411- Radon levels in Halifax County, VAEPA zone 2
18.9%at or above 4 pCi/L
Median 2.2 pCi/L · 37 tests · 1.5 points above Person County
- Radon levels in Caswell County, NCEPA zone 2
14.9%at or above 4 pCi/L
Median 1.6 pCi/L · 47 tests · 2.5 points below Person County
- Radon levels in Orange County, NCEPA zone 3
10.7%at or above 4 pCi/L
Median 1.1 pCi/L · 1,095 tests · 6.7 points below Person County
- Radon levels in Granville County, NCEPA zone 3
10.5%at or above 4 pCi/L
Median 0.8 pCi/L · 153 tests · 6.9 points below Person County
- Radon levels in Durham County, NCEPA zone 3
4.3%at or above 4 pCi/L
Median 0.7 pCi/L · 1,570 tests · 13.1 points below Person County
Person County, Cities and towns
Cities and towns in Person County
The Census Bureau estimates 40,636 residents in Person County for July 1, 2025, 1,452 more than in 2020 (+3.7%). That works out to 104 people per square mile of land. Roxboro, its one incorporated place, has 8,380 residents, 20.6% of the total. CDC's 190 reported tests for 2008 to 2017 work out to 4.7 per 1,000 residents (2025 estimate), close to North Carolina's 6.5.
Roxboro is the one incorporated place here; CDC publishes no figure by town, so it reads Person County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Roxboro | 8,380 | +3.0% | 20.6% |
One incorporated place, 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).
Person County, Homes
Homes in Person County
Person County is a place of houses on their own lots: 76% of its 18,482 homes are detached single-family houses, against 65% across North Carolina. Half of its homes were built before 1984, close to North Carolina's 1990: 22% date from before 1960 and 23% from 2000 or later. Owners live in 76% of the occupied homes (North Carolina: 66%), so for most households a test and a fix are their own to order.
| Homes | Person County | North Carolina |
|---|---|---|
| Housing units | 18,482 | 4,815,195 |
| Detached houses | 76% | 65% |
| In buildings of 5 or more | 4% | 14% |
| Mobile homes | 18% | 11% |
| Built before 1960 | 22% | 14% |
| Built since 2000 | 23% | 33% |
| Middle year built | 1984 | 1990 |
| Owner-occupied | 76% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.