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 Cabarrus County, North Carolina
EPA puts Cabarrus County in Zone 3, its lowest radon zone, and only 5 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
8.8%
13.8 pts below NC
- Cabarrus
- 8.8%
- NC
- 22.6%
880 tests, 2008 to 2017
Median result
1.0pCi/L
Below action level
- Cabarrus
- 1.0 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
880
19th of 75 by tests
- Cabarrus
- 880
- 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
54 of 75
Middle half
- Cabarrus
- 8.8%
- Transylvania
- 47.8%
By share, of 75 with 30+ tests
Read a result for Cabarrus County
Starts at Cabarrus County's median, 1.0 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.0 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. Cabarrus County's median reported result, 2008 to 2017.
The data
Cabarrus County, At a glance
Cabarrus 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 Cabarrus County, 2022
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 14.8% |
| 2020 | 18.1% |
| 2021 | 2.4% |
| 2022 | 0.0% |
2022: 0.0%. Across these years the share ran from 0.0% to 18.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 5 tests were reported to CDC for Cabarrus 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).
Cabarrus County, Compared
Cabarrus County radon figures, compared
Calculated by Radon411Cabarrus County reports fewer high tests than North Carolina overall. 8.8% of its 880 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 13.8 points below the 22.6% pooled from 99 North Carolina counties.
The newest figure, in 2022, counts only 5 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 880-test figure.
Ordered from highest share down, it comes 54th 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%; Cabarrus County sits 26.9 points below it.
Next door, the shares run from 8.5% in Mecklenburg County to 25.3% in Stanly County, with Mecklenburg County below Cabarrus County. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 8.8% share point the same way here.
Half the tests came in under 1.0 pCi/L and half over it; the single highest reached 27.1 pCi/L. The rest split 72.3% under 2 pCi/L and 19.0% from 2 to 4 (North Carolina: 55.6% and 21.8%). Year by year, 2014 opened at 14.8% and 2021 closed at 2.4% (down 12.4 points), with 2020 the high at 18.1%.
The busiest year on file was 2021, with 164 tests reported; the quietest, 2022, had 5.
Cabarrus CountyNorth Carolina, pooled
2.4% % of tests14.9% % of tests
| Year | Tests | Cabarrus County, at or above 4 pCi/L | North Carolina, pooled |
|---|---|---|---|
| 2014 | 155 | 14.8% | 21.9% |
| 2020 | 138 | 18.1% | 21.1% |
| 2021 | 164 | 2.4% | 14.9% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cabarrus County, Geology
The ground under Cabarrus County
PredictedUSGS's geologic map puts all of Cabarrus County's mapped land in one class: low radon potential. The map puts 80.6% of Cabarrus County in the area it calls Charlotte Belt and 19.4% in Carolina Slate Belt. USGS gives the first a radon index of 8 and the second 6, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Charlotte Belt | Igneous rocks, including granite, gabbro, and diorite. | Low | 8 | 80.6% |
| Carolina Slate Belt | Felsic metavolcanics, intermediate volcanics, metamudstone, argillite, and epiclastic rocks. | Low | 6 | 19.4% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cabarrus County beside the ground around it
Across North Carolina 1.3% of the land is rated high; none of Cabarrus County's is. Of the 5 counties that border it, 1 has more moderate-potential ground, Iredell County the most at 67.6%.
The map rates the ground, not the air in any home.
Local help
Cabarrus County, Local resources
Radon testing and mitigation in Cabarrus 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
Cabarrus County, Questions
Questions about radon in Cabarrus County
Are radon levels high in Cabarrus County?
In 2022, 0.0% of the radon tests reported to CDC for Cabarrus 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, 53 reported a higher share; pooled, the state comes to 22.6%.
Which counties border Cabarrus County?
Cabarrus County borders 5 counties: Mecklenburg County, Stanly County, Union County, Rowan County and Iredell County.
Products
Cabarrus County, Products
Testing a home in Cabarrus County
In Cabarrus County, 8.8% of 880 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 Cabarrus 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
EcoQube Wi-Fi continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi
- App only
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Cabarrus County, Bordering counties
Counties bordering Cabarrus County
Calculated by Radon411- Radon levels in Stanly CountyEPA zone 3
25.3%at or above 4 pCi/L
Median 2.2 pCi/L · 229 tests · 16.5 points above Cabarrus County
- Radon levels in Iredell CountyEPA zone 2
21.8%at or above 4 pCi/L
Median 1.8 pCi/L · 1,146 tests · 13.0 points above Cabarrus County
- Radon levels in Rowan CountyEPA zone 3
17.7%at or above 4 pCi/L
Median 1.4 pCi/L · 626 tests · 8.9 points above Cabarrus County
- Radon levels in Union CountyEPA zone 3
11.2%at or above 4 pCi/L
Median 1.1 pCi/L · 836 tests · 2.4 points above Cabarrus County
- Radon levels in Mecklenburg CountyEPA zone 3
8.5%at or above 4 pCi/L
Median 0.9 pCi/L · 3,753 tests · 0.3 points below Cabarrus County
Cabarrus County, Cities and towns
Cities and towns in Cabarrus County
Cabarrus County is growing: the Census Bureau puts it at 249,725 residents on July 1, 2025, up 9.9% from 227,240 in 2020. That works out to 691 people per square mile of land. Its largest town, Concord, has 114,598 residents, 45.9% of the total. Reported testing is thin here: 880 tests over 2008 to 2017, or 3.5 for every 1,000 residents (2025 estimate), where North Carolina as a whole comes to 6.5.
From Concord to Mount Pleasant, CDC publishes no figure by town: each reads Cabarrus County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Concord | 114,598 | +9.3% | 45.9% |
| Kannapolisextends beyond Cabarrus County | 61,708 | +11.5% | Counted whole |
| Harrisburg | 20,742 | +9.5% | 8.3% |
| Locustextends beyond Cabarrus County | 6,120 | +26.0% | Counted whole |
| Midlandextends beyond Cabarrus County | 5,151 | +9.4% | Counted whole |
| Mount Pleasant | 1,816 | +8.5% | 0.7% |
6 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 Cabarrus County is counted whole, so it has no share.
Cabarrus County, Homes
Homes in Cabarrus County
Cabarrus County is a place of houses on their own lots: 77% of its 91,339 homes are detached single-family houses, against 65% across North Carolina. Half of its homes were built before 1996, close to North Carolina's 1990: 17% date from before 1960 and 44% from 2000 or later. 72% 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 | Cabarrus County | North Carolina |
|---|---|---|
| Housing units | 91,339 | 4,815,195 |
| Detached houses | 77% | 65% |
| In buildings of 5 or more | 12% | 14% |
| Mobile homes | 5% | 11% |
| Built before 1960 | 17% | 14% |
| Built since 2000 | 44% | 33% |
| Middle year built | 1996 | 1990 |
| Owner-occupied | 72% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.