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 Cumberland County, North Carolina
EPA puts Cumberland County in Zone 3, its lowest radon zone, and only 3 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
Share at 4+ pCi/L
1.9%
20.7 pts below NC
- Cumberland
- 1.9%
- NC
- 22.6%
160 tests, 2008 to 2017
Median result
0.7pCi/L
Below action level
- Cumberland
- 0.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
160
52nd of 75 by tests
- Cumberland
- 160
- 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
66 of 75
Lowest quarter
- Cumberland
- 1.9%
- Transylvania
- 47.8%
By share, of 75 with 30+ tests
Read a result for Cumberland County
Starts at Cumberland County's median, 0.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.7 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. Cumberland County's median reported result, 2008 to 2017.
The data
Cumberland County, At a glance
Cumberland County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
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 Cumberland County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2020 | 41.5% |
| 2021 | 28.6% |
| 2022 | 0.0% |
2022: 0.0%. Across these years the share ran from 0.0% to 41.5%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 3 tests were reported to CDC for Cumberland 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).
Cumberland County, Compared
Cumberland County radon figures, compared
Calculated by Radon411Only 3 of 160 radon tests reported for Cumberland County over the 2008 to 2017 laboratory totals reached 4 pCi/L (1.9%). The median result, 0.7 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 6.1 pCi/L.
The newest figure, in 2022, counts only 3 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 160-test figure.
Across 99 North Carolina counties pooled together, 22.6% of tests reached that level, so Cumberland County runs 20.7 points below its state. Against the national pool of 35.7%, the gap is 33.8 points lower. Its place in the state: 66th of 75 North Carolina counties with 30 or more tests for the same period.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 1.9% share point the same way here. Of 3 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 1 a smaller one; the spread is 0.6% (Harnett County) to 19.2% (Moore County).
Below the action level, 144 tests (90.0%) came in under 2 pCi/L, against 55.6% statewide, and 13 tests (8.1%) fell between 2 and 4, against 21.8% statewide. USGS geology rates 100% of the county's land low radon potential.
The busiest year on file was 2020, with 53 tests reported; the quietest, 2022, had 3.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cumberland County, Geology
The ground under Cumberland County
PredictedUSGS's geologic map puts all of Cumberland County's mapped land in one class: low radon potential. 99.0% 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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Coastal Plain | Fossiliferous clay and sand, shelly sand, sandy marl, and limestone. | Low | 8 | 99.0% |
| Eastern Slate Belt | Proterozoic to Cambrian metamudstone and argillite, interbedded with metamorphosed sandstone, conglomerate, and volcanic rock. | Low | 8 | 1.0% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cumberland County beside the ground around it
Across North Carolina 1.3% of the land is rated high; none of Cumberland County's is. Of the 6 counties that border it, 1 has more moderate-potential ground, Harnett County the most at 11.9%.
The map rates the ground, not the air in any home.
Local help
Cumberland County, Local resources
Radon testing and mitigation in Cumberland 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
Cumberland County, Questions
Questions about radon in Cumberland County
Are radon levels high in Cumberland County?
In 2022, 0.0% of the radon tests reported to CDC for Cumberland 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, 65 reported a higher share; pooled, the state comes to 22.6%.
Which counties border Cumberland County?
Cumberland County borders 6 counties: Hoke County, Harnett County, Sampson County, Robeson County, Bladen County and Moore County.
Products
Cumberland County, Products
Testing a home in Cumberland County
In Cumberland County, 1.9% of 160 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 Cumberland 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
MonitorAEGTEST
HOUND-1011 rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Cumberland County, Bordering counties
Counties bordering Cumberland County
Calculated by Radon411- Radon levels in Moore CountyEPA zone 3
19.2%at or above 4 pCi/L
Median 1.3 pCi/L · 99 tests · 17.3 points above Cumberland County
- Radon levels in Robeson CountyEPA zone 3
3.8%at or above 4 pCi/L
Median 0.8 pCi/L · 53 tests · 1.9 points above Cumberland County
- Radon levels in Harnett CountyEPA zone 3
0.6%at or above 4 pCi/L
Median 0.6 pCi/L · 181 tests · 1.3 points below Cumberland County
- Radon levels in Hoke CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 19 tests · 1.9 points below Cumberland County
- Radon levels in Sampson CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 13 tests · 1.9 points below Cumberland County
- Radon levels in Bladen CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 14 tests · 1.9 points below Cumberland County
Cumberland County, Cities and towns
Cities and towns in Cumberland County
Cumberland County's population has barely moved since 2020: 338,473 residents on July 1, 2025 against 337,000 then, by the Census Bureau's estimates. That works out to 519 people per square mile of land. Fayetteville alone is home to 209,120 of them, 61.8% of the total. Reported testing is thin here: 160 tests over 2008 to 2017, or 0.5 for every 1,000 residents (2025 estimate), where North Carolina as a whole comes to 6.5.
From Fayetteville to Linden, CDC publishes no figure by town: each reads Cumberland County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Fayetteville | 209,120 | −0.8% | 61.8% |
| Hope Mills | 18,324 | +2.7% | 5.4% |
| Spring Lake | 11,252 | −2.3% | 3.3% |
| Eastover | 3,743 | +2.3% | 1.1% |
| Stedman | 1,312 | +2.6% | 0.4% |
| Wade | 653 | +2.7% | 0.2% |
| Falconextends beyond Cumberland County | 385 | +19.2% | Counted whole |
| Godwin | 159 | +3.2% | Under 0.1% |
| Linden | 139 | +2.2% | Under 0.1% |
9 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 Cumberland County is counted whole, so it has no share.
Cumberland County, Homes
Homes in Cumberland County
Of Cumberland County's 143,184 homes, 65% are detached houses, against 65% across North Carolina; 18% are in buildings of five or more homes. Half of its homes were built before 1987, close to North Carolina's 1990: 10% date from before 1960 and 28% from 2000 or later. 54% 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 | Cumberland County | North Carolina |
|---|---|---|
| Housing units | 143,184 | 4,815,195 |
| Detached houses | 65% | 65% |
| In buildings of 5 or more | 18% | 14% |
| Mobile homes | 8% | 11% |
| Built before 1960 | 10% | 14% |
| Built since 2000 | 28% | 33% |
| Middle year built | 1987 | 1990 |
| Owner-occupied | 54% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.