Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in King George County, Virginia
EPA puts King George County in Zone 3, its lowest radon zone, and high results are common there: 45.5% of the 488 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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
45.5%
15.1 pts above VA
- King George
- 45.5%
- Virginia
- 30.4%
488 tests, 2008 to 2017
Median result
3.6pCi/L
Below action level
- King George
- 3.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
488
27th of 84 by tests
- King George
- 488
- Fairfax
- 8,657
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 Virginia
16 of 84
Top quarter
- King George
- 45.5%
- Russell
- 67.3%
By share, of 84 with 30+ tests
Read a result for King George County
Starts at King George County's median, 3.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.6 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. King George County's median reported result, 2008 to 2017.
The data
King George County, At a glance
King George County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 97% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for King George County, 2008 to 2017, laboratory
Under 2 pCi/L: 26%2 to 4 pCi/L: 28%4 pCi/L and above: 46%
Of 488 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 128 | 26.2% |
| 2 to 4 pCi/L | 138 | 28.3% |
| 4 pCi/L and above | 222 | 45.5% |
What these figures count
These are the 488 tests reported to CDC for King George 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).
King George County, Compared
King George County radon figures, compared
Calculated by Radon411In King George County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (222 of 488) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 9.8 points higher. Across 131 Virginia counties pooled together, 30.4% of tests reached that level, so King George County runs 15.1 points above its state.
Of 3 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 10.7% (Westmoreland County) to 32.7% (Caroline County). By share, King George County is 16th of 84 Virginia counties with 30 or more tests for the same period.
Half the tests came in under 3.6 pCi/L and half over it; the single highest reached 54.6 pCi/L. Below the action level, 128 tests (26.2%) came in under 2 pCi/L, against 44.7% statewide, and 138 tests (28.3%) fell between 2 and 4, against 24.9% statewide.
The reported tests do not follow EPA's Zone 3 label for King George County (predicted average under 2 pCi/L): 45.5% of them reached 4 pCi/L, more than a low-potential zone suggests. USGS geology rates 97% of the county's land low radon potential. CDC also counts 67 tests taken after mitigation in King George County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for King George County went from 313 tests (2005 to 2014) to 488 (2008 to 2017), the share going from 49.2% to 45.5%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
King George County, Geology
The ground under King George County
PredictedUSGS's geologic map puts all of King George County's mapped land in one class: low radon potential. 96.9% of it lies in the area the map calls Tertiary Coastal Plain Sediments, 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 |
|---|---|---|---|---|
| Tertiary Coastal Plain Sediments | Tertiary Coastal Plain sand, silt, clay | Low | 8 | 96.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
King George County beside the ground around it
Across Virginia 47.9% of the land is rated high; none of King George County's is. Of the 4 counties that border it, 2 have more high-potential ground, Stafford County the most at 51.4%.
The map rates the ground, not the air in any home.
Local help
King George County, Local resources
Radon testing and mitigation in King George 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
King George County, Questions
Questions about radon in King George County
Are radon levels high in King George County?
Over the 2008 to 2017 laboratory totals, 45.5% of the radon tests reported to CDC for King George County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.6 pCi/L. Of 84 Virginia counties with 30 or more tests for the same period, 15 reported a higher share; pooled, the state comes to 30.4%.
Which counties border King George County?
King George County borders 4 counties: Stafford County, Caroline County, Essex County and Westmoreland County.
Products
King George County, Products
Testing a home in King George County
In King George County, 45.5% of 488 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 30.4% pooled across Virginia. 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 King George 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
RadonScan-Plus USB-powered radon monitor with Wi-Fi
- C-NRPP 2024/25: Not included
- Plug-in
- Wi-Fi
- Alarm
- Screen, app
First reading: Within 5 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
King George County, Bordering counties
Counties bordering King George County
Calculated by Radon411- Radon levels in Caroline CountyEPA zone 3
32.7%at or above 4 pCi/L
Median 2.5 pCi/L · 199 tests · 12.8 points below King George County
- Radon levels in Stafford CountyEPA zone 1
31.4%at or above 4 pCi/L
Median 2.5 pCi/L · 2,758 tests · 14.1 points below King George County
- Radon levels in Westmoreland CountyEPA zone 3
10.7%at or above 4 pCi/L
Median 1.4 pCi/L · 56 tests · 34.8 points below King George County
- Radon levels in Essex CountyEPA zone 3
7.7%at or above 4 pCi/L
Median 3.2 pCi/L · 13 tests · 37.8 points below King George County
King George County, Residents
Who lives in King George County
King George County is growing: the Census Bureau puts it at 29,646 residents on July 1, 2025, up 10.5% from 26,822 in 2020. That works out to 165 people per square mile of land. Testing is reported here more often than across the state: CDC's 488 reported tests for 2008 to 2017 come to 16.5 for every 1,000 residents (2025 estimate), against 6.0 for Virginia.
Census lists no incorporated place in King George County: every home in it reads the county's figures.
Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
King George County, Homes
Homes in King George County
King George County is a place of houses on their own lots: 83% of its 10,540 homes are detached single-family houses, against 61% across Virginia. Much of King George County is recent building: 49% of its homes have gone up since 2000 and the middle year built is 1999, against 1984 for Virginia. 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 | King George County | Virginia |
|---|---|---|
| Housing units | 10,540 | 3,654,784 |
| Detached houses | 83% | 61% |
| In buildings of 5 or more | 2% | 19% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 9% | 19% |
| Built since 2000 | 49% | 25% |
| Middle year built | 1999 | 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.