Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in York County, Virginia
EPA puts York County in Zone 3, its lowest radon zone, and only 23 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
38.4%
James City County
- James City
- 38.4%
- Newport News city
- 5.9%
2 of 6 neighbours have 30+ tests, 2006 to 2015
Nearest county
5.9%
Newport News city, 10 miles
- Newport News city
- 5.9%
- Virginia
- 30.7%
Share at 4+ pCi/L, 34 tests, 2006 to 2015
Ground above low
None
77.9 pts below Virginia
- York
- 0.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
23
Too few for a share
- York
- 23
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for York 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
York County, At a glance
York County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 85% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for York County, 2008 to 2017, laboratory
CDC holds 23 reported tests for York County over the 2008 to 2017 laboratory totals, with a median of 1.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). York County beside the counties around it is how this page reads it.
What these figures count
Only 23 tests were reported to CDC for York 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).
York County, Compared
York County radon figures, compared
Calculated by Radon411CDC's largest figure for York County rests on 23 tests over the 2008 to 2017 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 4.3 points and no rank or comparison is drawn from it. Results reached as high as 10.5 pCi/L, with a middle value of 1.8 pCi/L.
Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: James City County reported the largest share at or above 4 pCi/L, 38.4%, and Newport News city the smallest, 5.9%. Farther out, Norfolk city (29 miles away) at 5.3%, Chesapeake city (42 miles away) at 7.0% and Virginia Beach city (45 miles away) at 7.4% 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 York County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 85% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
York County, Geology
The ground under York County
PredictedUSGS's geologic map puts all of York County's mapped land in one class: low radon potential. The map puts 69.3% of York County in the area it calls Tertiary Coastal Plain Sediments and 16.1% in Quaternary Coastal Plain Sediments. 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 |
|---|---|---|---|---|
| Tertiary Coastal Plain Sediments | Tertiary Coastal Plain sand, silt, clay | Low | 8 | 69.3% |
| Quaternary Coastal Plain Sediments | Quaternary coastal sand and silt containing monazite. | Low | 6 | 16.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
York County beside the ground around it
Across Virginia 47.9% of the land is rated high; none of York County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
York County, Local resources
Radon testing and mitigation in York 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
York County, Questions
Questions about radon in York County
Are radon levels high in York County?
Over the 2008 to 2017 laboratory totals, 26.1% of the radon tests reported to CDC for York County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: James City County reported the largest share at or above 4 pCi/L, 38.4%, and Newport News city the smallest, 5.9%.
Which counties border York County?
York County borders 6 counties: Williamsburg city, Newport News city, Poquoson city, Gloucester County, Hampton city and James City County.
Products
York County, Products
Testing a home in York County
No CDC figure names York County; the nearest county with one, Newport News city (10 miles away), reported 5.9% 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. 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 York County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
EcoQube Flex battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 15 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
York County, Bordering counties
Counties bordering York County
Calculated by Radon411- Radon levels in James City CountyEPA zone 3
38.4%at or above 4 pCi/L
Median 2.4 pCi/L · 73 tests
- Radon levels in Gloucester CountyEPA zone 3
28.6%at or above 4 pCi/L
Median 2.1 pCi/L · 7 tests
- Radon levels in Williamsburg cityEPA zone 3
23.1%at or above 4 pCi/L
Median 0.8 pCi/L · 13 tests
- Radon levels in Newport News cityEPA zone 3
5.9%at or above 4 pCi/L
Median 1.4 pCi/L · 34 tests
- Radon levels in Hampton cityEPA zone 3
5.0%at or above 4 pCi/L
Median 0.1 pCi/L · 20 tests
- Radon levels in Poquoson cityEPA zone 3
0.0%at or above 4 pCi/L
Median 0.2 pCi/L · 1 test
York County, Residents
Who lives in York County
The Census Bureau estimates 71,374 residents in York County for July 1, 2025, 1,138 more than in 2020 (+1.6%). That works out to 682 people per square mile of land. Reported testing is thin here: 23 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.
Census lists no incorporated place in York County: every home in it reads the county's figures.
Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).
York County, Homes
Homes in York County
Of York County's 28,211 homes, 68% are detached houses, against 61% across Virginia; 15% are in buildings of five or more homes. Much of York County is recent building: 33% of its homes have gone up since 2000 and the middle year built is 1992, against 1984 for Virginia. 71% of occupied homes are lived in by their owner (Virginia: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | York County | Virginia |
|---|---|---|
| Housing units | 28,211 | 3,654,784 |
| Detached houses | 68% | 61% |
| In buildings of 5 or more | 15% | 19% |
| Mobile homes | 1% | 4% |
| Built before 1960 | 8% | 19% |
| Built since 2000 | 33% | 25% |
| Middle year built | 1992 | 1984 |
| Owner-occupied | 71% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.