
Long-term kit![]()
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
EPA puts Campbell County in Zone 1, its highest radon zone, and 39.7% of its 365 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
39.7%
9.3 pts above VA
365 tests, 2008 to 2017
Median result
3.2pCi/L
Below action level
Midpoint of the tests, 2008 to 2017
Tests reported
365
35th of 84 by tests
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 1
Highest potential
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Virginia
30 of 84
Middle half
By share, of 84 with 30+ tests
Read a result for Campbell County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.2 pCi/L
Between 2 and 4 pCi/L
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Campbell County's median reported result, 2008 to 2017.
The data
Campbell County, At a glance
Predicted: EPA radon zone
EPA puts all of Campbell County in
USGS geologic potential: High across 66% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Of 365 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 91 | 24.9% |
| 2 to 4 pCi/L | 129 | 35.3% |
| 4 pCi/L and above | 145 | 39.7% |
These are the 365 tests reported to CDC for Campbell County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Campbell County, Compared
In Campbell County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (145 of 365) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 4.0 points higher. Across 131 Virginia counties pooled together, 30.4% of tests reached that level, so Campbell County runs 9.3 points above its state.
Of 6 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 10.0% (Appomattox County) to 38.4% (Pittsylvania County). By share, Campbell County is 30th of 84 Virginia counties with 30 or more tests for the same period.
Half the tests came in under 3.2 pCi/L and half over it; the single highest reached 45.2 pCi/L. Below the action level, 91 tests (24.9%) came in under 2 pCi/L, against 44.7% statewide, and 129 tests (35.3%) fell between 2 and 4, against 24.9% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 39.7% share point the same way here. USGS geology rates 66% of the county's land high radon potential. CDC also counts 41 tests taken after mitigation in Campbell County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Campbell County went from 282 tests (2005 to 2014) to 365 (2008 to 2017), the share going from 37.2% to 39.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Campbell County, Geology
USGS's geologic map splits Campbell County: 66.1% of its land is high radon potential and 33.9% moderate. The map puts 66.1% of Campbell County in the area it calls Inner Piedmont and 22.5% in Carolina Terrane, with 2 smaller areas beside them. USGS gives the first a radon index of 12, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Inner Piedmont | Granite, pegmatites, granitic gneiss, schist and gneiss, slate, and phyllite. | High | 12 | 66.1% |
| Carolina Terrane | Metavolcanic rocks, granite and granitic gneiss. | Moderate | 10 | 22.5% |
| Mesozoic Basins | Sandstone, siltstone and lacustrine black shale. | Moderate | 11 | 10.6% |
| Blue Ridge | Granite, pegmatite, monazite, schist, and gneiss. | Moderate | 10 | 0.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Campbell County has more high-potential ground than Virginia as a whole: 66.1% of its land against 47.9%. Of the 7 counties that border it, none has as large a share of high-potential ground; Pittsylvania County comes nearest at 52.3%.
The map rates the ground, not the air in any home.
Local help
Campbell County, Local resources
The Code of Virginia requires that Radon testers and mitigators be currently certified by either the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB).
What it means
Campbell County, Questions
Over the 2008 to 2017 laboratory totals, 39.7% of the radon tests reported to CDC for Campbell County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.2 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 29 reported a higher share; pooled, the state comes to 30.4%.
Campbell County borders 7 counties: Lynchburg city, Appomattox County, Bedford County, Amherst County, Halifax County, Charlotte County and Pittsylvania County.
Products
Campbell County, Products
In Campbell County, 39.7% of 365 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. In Zone 1 the year-round level in Campbell County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors: 1 of 3
Campbell County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Campbell County
Explore
Campbell County, Bordering counties
40.0%at or above 4 pCi/L
Median 3.7 pCi/L · 20 tests · 0.3 points above Campbell County
38.4%at or above 4 pCi/L
Median 3.0 pCi/L · 242 tests · 1.3 points below Campbell County
36.8%at or above 4 pCi/L
Median 2.9 pCi/L · 247 tests · 2.9 points below Campbell County
25.9%at or above 4 pCi/L
Median 2.2 pCi/L · 753 tests · 13.8 points below Campbell County
23.5%at or above 4 pCi/L
Median 2.1 pCi/L · 749 tests · 16.2 points below Campbell County
18.9%at or above 4 pCi/L
Median 2.2 pCi/L · 37 tests · 20.8 points below Campbell County
10.0%at or above 4 pCi/L
Median 2.1 pCi/L · 50 tests · 29.7 points below Campbell County
Campbell County, Cities and towns
Campbell County's population has barely moved since 2020: 55,629 residents on July 1, 2025 against 55,598 then, by the Census Bureau's estimates. That works out to 111 people per square mile of land. No town dominates: Altavista, the largest, has 3,353 residents, 6.0% of the total. Together its 2 incorporated places hold 8.0% of those residents; the other 92.0% live outside any of them. CDC's 365 reported tests for 2008 to 2017 work out to 6.6 per 1,000 residents (2025 estimate), close to Virginia's 6.0.
From Altavista to Brookneal, CDC publishes no figure by town: each reads Campbell County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Altavista | 3,353 | −0.6% | 6.0% |
| Brookneal | 1,083 | −0.6% | 1.9% |
2 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).
Campbell County, Homes
Of Campbell County's 25,363 homes, 67% are detached houses, against 61% across Virginia; 19% are mobile homes. Half of its homes were built before 1980, close to Virginia's 1984: 18% date from before 1960 and 22% from 2000 or later. Owners live in 76% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Campbell County | Virginia |
|---|---|---|
| Housing units | 25,363 | 3,654,784 |
| Detached houses | 67% | 61% |
| In buildings of 5 or more | 7% | 19% |
| Mobile homes | 19% | 4% |
| Built before 1960 | 18% | 19% |
| Built since 2000 | 22% | 25% |
| Middle year built | 1980 | 1984 |
| Owner-occupied | 76% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.