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
Radon Levels in Craig County, Virginia
EPA puts Craig County in Zone 1, its highest radon zone, and only 13 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
58.5%
Giles County
- Giles
- 58.5%
- Roanoke
- 20.4%
5 of 6 neighbours have 30+ tests, 2006 to 2015
Nearest county
28.6%
Salem city, 16 miles
- Salem city
- 28.6%
- Virginia
- 30.7%
Share at 4+ pCi/L, 311 tests, 2006 to 2015
Ground above low
100.0%
22.1 pts above Virginia
- Craig
- 100.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
14
Too few for a share
- Craig
- 14
- Needed
- 30
2007 to 2016, laboratory
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Read a result for Craig County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Craig County, At a glance
Craig County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Craig County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Craig County, 2008 to 2017, laboratory
CDC holds 13 reported tests for Craig County over the 2008 to 2017 laboratory totals, with a median of 2.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Craig County beside the counties around it is how this page reads it.
What these figures count
Only 13 tests were reported to CDC for Craig County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Craig County, Compared
Craig County radon figures, compared
Calculated by Radon411CDC's largest figure for Craig County rests on 14 tests over the 2007 to 2016 laboratory totals, 7 of them at or above 4 pCi/L, so each test moves its share by 7.1 points and no rank or comparison is drawn from it. Results reached as high as 23.3 pCi/L, with a middle value of 3.4 pCi/L.
Of the counties bordering it, 5 have a figure over the 2006 to 2015 laboratory totals: Giles County reported the largest share at or above 4 pCi/L, 58.5%, and Roanoke County the smallest, 20.4%, with Alleghany County at 44.4%, Botetourt County at 40.2% and Montgomery County at 35.2% between. Farther out, Salem city (16 miles away) at 28.6%, Roanoke city (20 miles away) at 25.2% and Radford city (31 miles away) at 40.6% have figures too. Pooled across 132 Virginia counties, 30.7% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Russell County reported the highest share (68.5%) and Norfolk city the lowest (5.3%). EPA's 1993 map puts Craig County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Craig County, Geology
The ground under Craig County
PredictedUSGS's geologic map puts all of Craig County's mapped land in one class: high radon potential. All of it lies in the area the map calls Valley and Ridge, to which USGS gives a radon index of 15, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Valley and Ridge | Cambrian dolomite, limestone, shale, and sandstone, Silurian-Ordovician limestone, dolomite, shale, and sandstone, Mississippian-Devonian sandstone, shale, limestone, gypsum, and coal. | High | 15 | 99.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Craig County beside the ground around it
Craig County has more high-potential ground than Virginia as a whole: 100% of its land against 47.9%. Of the 6 counties that border it, none has as large a share of high-potential ground; Alleghany County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Craig County, Local resources
Radon testing and mitigation in Craig County
- VDH Radon ProgramVDH Radon Program answers questions about testing, mitigation and the rules in Virginia.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 Virginia2 professionals are listed in Virginia.
What Virginia's program says
- Phone
- (804) 864-8161
- Radon@vdh.virginia.gov
- Licensing of radon professionals
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
Craig County, Questions
Questions about radon in Craig County
Are radon levels high in Craig County?
Over the 2008 to 2017 laboratory totals, 46.2% of the radon tests reported to CDC for Craig County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Of the counties bordering it, 5 have a figure over the 2006 to 2015 laboratory totals: Giles County reported the largest share at or above 4 pCi/L, 58.5%, and Roanoke County the smallest, 20.4%, with Alleghany County at 44.4%, Botetourt County at 40.2% and Montgomery County at 35.2% between.
Which counties border Craig County?
Craig County borders 6 counties: Roanoke County, VA, Monroe County, WV, Alleghany County, VA, Montgomery County, VA, Botetourt County, VA and Giles County, VA.
Products
Craig County, Products
Testing a home in Craig County
No CDC figure names Craig County; the nearest county with one, Salem city (16 miles away), reported 28.6% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. In Zone 1 the year-round level in Craig 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 monitors3
See every kit and monitor
MonitorX-Sense
XR0B-SR battery digital radon monitor with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Craig County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Craig County
Explore
Craig County, Bordering counties
Counties bordering Craig County
Calculated by Radon411- Radon levels in Giles County, VAEPA zone 1
58.5%at or above 4 pCi/L
Median 4.8 pCi/L · 147 tests
- Radon levels in Alleghany County, VAEPA zone 1
44.4%at or above 4 pCi/L
Median 3.5 pCi/L · 54 tests
- Radon levels in Botetourt County, VAEPA zone 1
40.2%at or above 4 pCi/L
Median 3.2 pCi/L · 635 tests
- Radon levels in Monroe County, WVEPA zone 1
35.7%at or above 4 pCi/L
Median 3.8 pCi/L · 14 tests
- Radon levels in Montgomery County, VAEPA zone 1
35.2%at or above 4 pCi/L
Median 2.4 pCi/L · 963 tests
- Radon levels in Roanoke County, VAEPA zone 1
20.4%at or above 4 pCi/L
Median 1.9 pCi/L · 1,621 tests
Craig County, Cities and towns
Cities and towns in Craig County
About 4,800 people live in Craig County by the Census Bureau's estimate for July 1, 2025, 76 fewer than in 2020 (−1.6%). That works out to 15 people per square mile of land. New Castle, its one incorporated place, has 120 residents, 2.5% of the total. Reported testing is thin here: 14 tests over 2007 to 2016, or 2.9 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 5.6.
New Castle is the one incorporated place here; CDC publishes no figure by town, so it reads Craig County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| New Castle | 120 | −2.4% | 2.5% |
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).
Craig County, Homes
Homes in Craig County
Craig County is a place of houses on their own lots: 85% of its 2,397 homes are detached single-family houses, against 61% across Virginia. Half of its homes were built before 1979, close to Virginia's 1984: 22% date from before 1960 and 23% from 2000 or later. Owners live in 83% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Craig County | Virginia |
|---|---|---|
| Housing units | 2,397 | 3,654,784 |
| Detached houses | 85% | 61% |
| In buildings of 5 or more | under 1% | 19% |
| Mobile homes | 15% | 4% |
| Built before 1960 | 22% | 19% |
| Built since 2000 | 23% | 25% |
| Middle year built | 1979 | 1984 |
| Owner-occupied | 83% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.