
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
EPA puts Poquoson city in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2006 to 2015, 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, 9 miles
Share at 4+ pCi/L, 34 tests, 2006 to 2015
Ground above low
None
77.9 pts below Virginia
Share of land USGS rates moderate or high potential
Tests reported
3
Too few for a share
2005 to 2014, laboratory
EPA radon zone
Zone 3
Lower potential
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Poquoson city
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
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
Poquoson city, At a glance
Predicted: EPA radon zone
USGS geologic potential: Low across 77% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC holds 1 reported test for Poquoson city over the 2006 to 2015 laboratory totals, a result of 0.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Poquoson city beside the counties around it is how this page reads it.
Only 1 test was reported to CDC for Poquoson city over 2006 to 2015 (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: 2006 to 2015, laboratory. Measured data period: 2005 to 2015 (every CDC figure on file).
Poquoson city, Compared
CDC's largest figure for Poquoson city rests on 3 tests over the 2005 to 2014 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 35.3 pCi/L, with a middle value of 32.2 pCi/L.
The nearest counties with a figure are Newport News city (9 miles away) at 5.9%, Norfolk city (17 miles away) at 5.3% and James City County (27 miles away) at 38.4%. 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 Poquoson city in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 77% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Poquoson city, Geology
USGS's geologic map puts all of Poquoson city's mapped land in one class: low radon potential. 76.8% 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 | 76.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Virginia 47.9% of the land is rated high; none of Poquoson city's is. None of the 2 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Poquoson city, 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
Poquoson city, Questions
Over the 2006 to 2015 laboratory totals, 0.0% of the radon tests reported to CDC for Poquoson city, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.2 pCi/L. Of the 8 nearest counties with a figure, within 70 miles, the share of tests at or above 4 pCi/L runs from 5.3% to 38.4%.
Poquoson city borders 2 counties: Hampton city and York County.
Products
Poquoson city, Products
No CDC figure names Poquoson city; the nearest county with one, Newport News city (9 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 Poquoson city.
Test kits and monitors: 1 of 3
Explore
Poquoson city, Bordering counties
18.2%at or above 4 pCi/L
Median 1.2 pCi/L · 22 tests
5.0%at or above 4 pCi/L
Median 0.1 pCi/L · 20 tests
Poquoson city, Cities and towns
Poquoson city is growing: the Census Bureau puts it at 13,292 residents on July 1, 2025, up 6.6% from 12,472 in 2020. That works out to 866 people per square mile of land. Poquoson, its one incorporated place, has 13,292 residents, 100.0% of the total. Reported testing is thin here: 3 tests over 2005 to 2014, or 0.2 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 4.4.
Poquoson is the one incorporated place here; CDC publishes no figure by town, so it reads Poquoson city's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Poquoson | 13,292 | +6.6% | 100.0% |
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).
Poquoson city, Homes
Poquoson city is a place of houses on their own lots: 89% of its 4,945 homes are detached single-family houses, against 61% across Virginia. Half of its homes were built before 1977, close to Virginia's 1984: 24% date from before 1960 and 15% from 2000 or later. Owners live in 85% of the occupied homes (Virginia: 67%), so for most households a test and a fix are their own to order.
| Homes | Poquoson city | Virginia |
|---|---|---|
| Housing units | 4,945 | 3,654,784 |
| Detached houses | 89% | 61% |
| In buildings of 5 or more | 2% | 19% |
| Mobile homes | 1% | 4% |
| Built before 1960 | 24% | 19% |
| Built since 2000 | 15% | 25% |
| Middle year built | 1977 | 1984 |
| Owner-occupied | 85% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.