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 Accomack County, Virginia
EPA puts Accomack County in Zone 3, its lowest radon zone, and only 9 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
Nearest county
5.9%
Newport News city, 67 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
- Accomack
- 0.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
11
Too few for a share
- Accomack
- 11
- Needed
- 30
2006 to 2015, 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 Accomack 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
Accomack County, At a glance
Accomack County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 68% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Accomack County, 2008 to 2017, laboratory
CDC holds 9 reported tests for Accomack County over the 2008 to 2017 laboratory totals, with a median of 0.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Accomack County beside the counties around it is how this page reads it.
What these figures count
Only 9 tests were reported to CDC for Accomack 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).
Accomack County, Compared
Accomack County radon figures, compared
Calculated by Radon411CDC's largest figure for Accomack County rests on 11 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 9.1 points and no rank or comparison is drawn from it. Results reached as high as 3.0 pCi/L, with a middle value of 0.1 pCi/L.
The nearest counties with a figure are Newport News city (67 miles away) at 5.9%, Westmoreland County (68 miles away) at 14.3% and Norfolk city (69 miles away) at 5.3%. 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 Accomack County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 68% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Accomack County, Geology
The ground under Accomack County
PredictedUSGS's geologic map puts all of Accomack County's mapped land in one class: low radon potential. 67.7% of it lies in the area the map calls Quaternary Coastal Plain Sediments, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Quaternary Coastal Plain Sediments | Quaternary coastal sand and silt containing monazite. | Low | 6 | 67.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Accomack County beside the ground around it
Across Virginia 47.9% of the land is rated high; none of Accomack County's is. None of the 3 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Accomack County, Local resources
Radon testing and mitigation in Accomack 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
Accomack County, Questions
Questions about radon in Accomack County
Are radon levels high in Accomack County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Accomack County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.1 pCi/L. Of the 8 nearest counties with a figure, within 95 miles, the share of tests at or above 4 pCi/L runs from 5.3% to 47.6%.
Which counties border Accomack County?
Accomack County borders 3 counties: Somerset County, MD, Northampton County, VA and Worcester County, MD.
Products
Accomack County, Products
Testing a home in Accomack County
No CDC figure names Accomack County; the nearest county with one, Newport News city (67 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 Accomack 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
Accomack County, Bordering counties
Counties bordering Accomack County
Calculated by Radon411- Radon levels in Somerset County, MDEPA zone 2
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Northampton County, VAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 8 tests
- Radon levels in Worcester County, MDEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 12 tests
Accomack County, Cities and towns
Cities and towns in Accomack County
The Census Bureau estimates 33,859 residents in Accomack County for July 1, 2025, 459 more than in 2020 (+1.4%). That works out to 75 people per square mile of land. No town dominates: Chincoteague, the largest, has 3,309 residents, 9.8% of the total. Reported testing is thin here: 11 tests over 2006 to 2015, or 0.3 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 5.0.
From Chincoteague to Keller, CDC publishes no figure by town: each reads Accomack County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Chincoteague | 3,309 | −0.9% | 9.8% |
| Onancock | 1,177 | +0.7% | 3.5% |
| Parksley | 823 | +0.7% | 2.4% |
| Belle Havenextends beyond Accomack County | 544 | +0.2% | Counted whole |
| Onley | 541 | +1.5% | 1.6% |
| Accomac | 522 | +0.8% | 1.5% |
| Tangier | 442 | +1.6% | 1.3% |
| Melfa | 405 | +1.8% | 1.2% |
| Bloxom | 386 | +1.0% | 1.1% |
| Painter | 278 | +1.5% | 0.8% |
| Wachapreague | 257 | +0.4% | 0.8% |
| Hallwood | 208 | +1.0% | 0.6% |
- Saxis
- Keller
14 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Accomack County is counted whole, so it has no share.
Accomack County, Homes
Homes in Accomack County
Of Accomack County's 21,897 homes, 75% are detached houses, against 61% across Virginia; 18% are mobile homes. Half of its homes were built before 1982, close to Virginia's 1984: 26% date from before 1960 and 24% from 2000 or later. 70% 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 | Accomack County | Virginia |
|---|---|---|
| Housing units | 21,897 | 3,654,784 |
| Detached houses | 75% | 61% |
| In buildings of 5 or more | 3% | 19% |
| Mobile homes | 18% | 4% |
| Built before 1960 | 26% | 19% |
| Built since 2000 | 24% | 25% |
| Middle year built | 1982 | 1984 |
| Owner-occupied | 70% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.