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 Glynn County, Georgia
EPA puts Glynn County in Zone 3, its lowest radon zone, and only 22 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
0.0%
Chatham County, 58 miles
- Chatham
- 0.0%
- Georgia
- 23.9%
Share at 4+ pCi/L, 47 tests, 2007 to 2016
Ground above low
None
26.5 pts below Georgia
- Glynn
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
23
Too few for a share
- Glynn
- 23
- Needed
- 30
2007 to 2016, 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 Glynn 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
Glynn County, At a glance
Glynn 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 Glynn County, 2008 to 2017, laboratory
CDC holds 22 reported tests for Glynn County over the 2008 to 2017 laboratory totals, with a median of 0.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Glynn County beside the counties around it is how this page reads it.
What these figures count
Only 22 tests were reported to CDC for Glynn 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).
Glynn County, Compared
Glynn County radon figures, compared
Calculated by Radon411CDC's largest figure for Glynn County rests on 23 tests over the 2007 to 2016 laboratory totals, 0 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 3.0 pCi/L, with a middle value of 0.2 pCi/L.
The nearest counties with a figure are Chatham County (58 miles away) at 0.0%, Laurens County (118 miles away) at 16.1% and Richmond County (150 miles away) at 0.0%. Pooled across 137 Georgia counties, 23.9% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Barrow County reported the highest share (51.0%) and Dougherty County the lowest (0.0%). EPA's 1993 map puts Glynn 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.
Glynn County, Geology
The ground under Glynn County
PredictedUSGS's geologic map puts all of Glynn County's mapped land in one class: low radon potential. 85.2% of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Quaternary and Pleistocene-Pliocene coastal sand and gravel, lagoon and marsh clay and silt. | Low | 7 | 85.2% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Glynn County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Glynn County's is. None of the 4 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Glynn County, Local resources
Radon testing and mitigation in Glynn County
- Georgia's radon programGeorgia Attorney General's Consumer Protection DivisionGeorgia's radon program does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Georgia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
- Compare kits
- Professionals in Georgia3 professionals are listed in Georgia.
What Georgia's program says
- Licensing of radon professionals
There are no laws mandating a mitigator receive certification in Georgia, however, many mitigators choose to get certified by one of two national programs.
What it means
Glynn County, Questions
Questions about radon in Glynn County
Are radon levels high in Glynn County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Glynn County, Georgia 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 171 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 26.5%.
Which counties border Glynn County?
Glynn County borders 4 counties: McIntosh County, Camden County, Brantley County and Wayne County.
Products
Glynn County, Products
Testing a home in Glynn County
No CDC figure names Glynn County; the nearest county with one, Chatham County (58 miles away), reported 0.0% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Glynn 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
MonitorAEGTEST
HOUND-1011S rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Glynn County, Bordering counties
Counties bordering Glynn County
Calculated by Radon411- Radon levels in McIntosh CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 7 tests
- Radon levels in Camden CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.2 pCi/L · 11 tests
- Radon levels in Wayne CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 3 tests
- Radon levels in Brantley CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Glynn County, Cities and towns
Cities and towns in Glynn County
The Census Bureau estimates 87,599 residents in Glynn County for July 1, 2025, 3,120 more than in 2020 (+3.7%). That works out to 209 people per square mile of land. Brunswick, its one incorporated place, has 15,730 residents, 18.0% of the total. Reported testing is thin here: 23 tests over 2007 to 2016, or 0.3 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.6.
Brunswick is the one incorporated place here; CDC publishes no figure by town, so it reads Glynn County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Brunswick | 15,730 | +3.4% | 18.0% |
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).
Glynn County, Homes
Homes in Glynn County
Of Glynn County's 42,928 homes, 65% are detached houses, against 66% across Georgia; 14% are in buildings of five or more homes. Half of its homes were built before 1987, close to Georgia's 1991: 17% date from before 1960 and 29% from 2000 or later. 67% of occupied homes are lived in by their owner (Georgia: 65%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Glynn County | Georgia |
|---|---|---|
| Housing units | 42,928 | 4,483,873 |
| Detached houses | 65% | 66% |
| In buildings of 5 or more | 14% | 16% |
| Mobile homes | 9% | 8% |
| Built before 1960 | 17% | 12% |
| Built since 2000 | 29% | 33% |
| Middle year built | 1987 | 1991 |
| Owner-occupied | 67% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.