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
Locations and reports
Radon Levels in Southampton County, Virginia
EPA puts Southampton County in Zone 3, its lowest radon zone, and only 2 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
37.0%
Northampton County
- Northampton
- 37.0%
1 of 9 neighbours have 30+ tests, 2006 to 2015
Nearest county
36.4%
Brunswick County, 42 miles
- Brunswick
- 36.4%
- Virginia
- 30.7%
Share at 4+ pCi/L, 33 tests, 2006 to 2015
Ground above low
None
77.9 pts below Virginia
- Southampton
- 0.0%
- Virginia
- 77.9%
Share of land USGS rates moderate or high potential
Tests reported
2
Too few for a share
- Southampton
- 2
- 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 Southampton 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
Southampton County, At a glance
Southampton County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Southampton County, 2008 to 2017, laboratory
CDC holds 2 reported tests for Southampton County over the 2008 to 2017 laboratory totals, with a median of 1.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Southampton County beside the counties around it is how this page reads it.
What these figures count
Only 2 tests were reported to CDC for Southampton 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).
Southampton County, Compared
Southampton County radon figures, compared
Calculated by Radon411CDC's largest figure for Southampton County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 1.5 pCi/L, with a middle value of 1.1 pCi/L.
Northampton County, NC, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 37.0% of its tests at or above 4 pCi/L. Farther out, Brunswick County (42 miles away) at 36.4%, Newport News city (42 miles away) at 5.9% and Chesapeake city (45 miles away) at 7.0% 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 Southampton County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Southampton County, Geology
The ground under Southampton County
PredictedUSGS's geologic map puts all of Southampton County's mapped land in one class: low radon potential. All 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 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Southampton County beside the ground around it
Across Virginia 47.9% of the land is rated high; none of Southampton County's is. Of the 9 counties that border it, 1 has more high-potential ground, Greensville County the most at 0.5%.
The map rates the ground, not the air in any home.
Local help
Southampton County, Local resources
Radon testing and mitigation in Southampton 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
Southampton County, Questions
Questions about radon in Southampton County
Are radon levels high in Southampton County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Southampton County, Virginia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Northampton County, NC, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 37.0% of its tests at or above 4 pCi/L.
Which counties border Southampton County?
Southampton County borders 9 counties: Franklin city, VA, Sussex County, VA, Isle of Wight County, VA, Surry County, VA, Suffolk city, VA, Greensville County, VA, Hertford County, NC, Gates County, NC and Northampton County, NC.
Products
Southampton County, Products
Testing a home in Southampton County
No CDC figure names Southampton County; the nearest county with one, Brunswick County (42 miles away), reported 36.4% 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 Southampton 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
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Southampton County, Bordering counties
Counties bordering Southampton County
Calculated by Radon411- Radon levels in Northampton County, NCEPA zone 3
37.0%at or above 4 pCi/L
Median 3.4 pCi/L · 46 tests
- Radon levels in Isle of Wight County, VAEPA zone 3
33.3%at or above 4 pCi/L
Median 1.1 pCi/L · 3 tests
- Radon levels in Franklin city, VAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 2 tests
- Radon levels in Sussex County, VAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Suffolk city, VAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 5 tests
- Radon levels in Greensville County, VAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 2 tests
- Radon levels in Hertford County, NCEPA zone 3
0.0%at or above 4 pCi/L
Median 0.4 pCi/L · 2 tests
- Radon levels in Gates County, NCEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Surry County, VAEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Southampton County, Cities and towns
Cities and towns in Southampton County
The Census Bureau estimates 18,110 residents in Southampton County for July 1, 2025, 160 more than in 2020 (+0.9%). That works out to 30 people per square mile of land. No town dominates: Courtland, the largest, has 1,299 residents, 7.2% of the total. Together its 6 incorporated places hold 14.7% of those residents; the other 85.3% live outside any of them. Reported testing is thin here: 2 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Virginia as a whole comes to 6.0.
From Courtland to Branchville, CDC publishes no figure by town: each reads Southampton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Courtland | 1,299 | +0.5% | 7.2% |
| Boykins | 517 | +0.4% | 2.9% |
| Ivor | 314 | Level | 1.7% |
| Newsoms | 284 | +0.7% | 1.6% |
| Capron | 138 | +0.7% | 0.8% |
| Branchville | 119 | Level | 0.7% |
6 incorporated places, 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).
Southampton County, Homes
Homes in Southampton County
Southampton County is a place of houses on their own lots: 78% of its 7,774 homes are detached single-family houses, against 61% across Virginia. Half of its homes were built before 1980, close to Virginia's 1984: 26% date from before 1960 and 23% from 2000 or later. 75% 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 | Southampton County | Virginia |
|---|---|---|
| Housing units | 7,774 | 3,654,784 |
| Detached houses | 78% | 61% |
| In buildings of 5 or more | 2% | 19% |
| Mobile homes | 17% | 4% |
| Built before 1960 | 26% | 19% |
| Built since 2000 | 23% | 25% |
| Middle year built | 1980 | 1984 |
| Owner-occupied | 75% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.