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 Thomas County, Georgia
EPA puts Thomas County in Zone 3, its lowest radon zone, and only 15 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
24.0%
Leon County
- Leon
- 24.0%
- Jefferson
- 4.7%
2 of 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
0.0%
Dougherty County, 49 miles
- Dougherty
- 0.0%
- Georgia
- 23.9%
Share at 4+ pCi/L, 32 tests, 2007 to 2016
Ground above low
None
26.5 pts below Georgia
- Thomas
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
15
Too few for a share
- Thomas
- 15
- 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 Thomas 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
Thomas County, At a glance
Thomas 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 Thomas County, 2008 to 2017, laboratory
CDC holds 15 reported tests for Thomas County over the 2008 to 2017 laboratory totals, with a median of 1.7 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Thomas County beside the counties around it is how this page reads it.
What these figures count
Only 15 tests were reported to CDC for Thomas 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).
Thomas County, Compared
Thomas County radon figures, compared
Calculated by Radon411CDC's largest figure for Thomas County rests on 15 tests over the 2008 to 2017 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 6.7 points and no rank or comparison is drawn from it. Results reached as high as 6.1 pCi/L, with a middle value of 1.7 pCi/L.
Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Leon County, FL reported the largest share at or above 4 pCi/L, 24.0%, and Jefferson County, FL the smallest, 4.7%. Farther out, Dougherty County (49 miles away) at 0.0%, Houston County (111 miles away) at 8.2% and Laurens County (125 miles away) at 16.1% have figures too. 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 Thomas 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.
Thomas County, Geology
The ground under Thomas County
PredictedUSGS's geologic map puts all of Thomas County's mapped land in one class: low radon potential. All of it lies in the area the map calls Coastal Plain, 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 |
|---|---|---|---|---|
| Coastal Plain | Cretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon. | Low | 8 | 99.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Thomas County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Thomas 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
Thomas County, Local resources
Radon testing and mitigation in Thomas 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
Thomas County, Questions
Questions about radon in Thomas County
Are radon levels high in Thomas County?
Over the 2008 to 2017 laboratory totals, 13.3% of the radon tests reported to CDC for Thomas County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.7 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Leon County, FL reported the largest share at or above 4 pCi/L, 24.0%, and Jefferson County, FL the smallest, 4.7%.
Which counties border Thomas County?
Thomas County borders 6 counties: Grady County, GA, Brooks County, GA, Leon County, FL, Colquitt County, GA, Jefferson County, FL and Mitchell County, GA.
Products
Thomas County, Products
Testing a home in Thomas County
No CDC figure names Thomas County; the nearest county with one, Dougherty County (49 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 Thomas 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
Thomas County, Bordering counties
Counties bordering Thomas County
Calculated by Radon411- Radon levels in Leon County, FLEPA zone 2
24.0%at or above 4 pCi/L
Median 2.3 pCi/L · 4,043 tests
- Radon levels in Jefferson County, FLEPA zone 3
4.7%at or above 4 pCi/L
Median 1.4 pCi/L · 43 tests
- Radon levels in Brooks County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.7 pCi/L · 3 tests
- Radon levels in Colquitt County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 2 tests
- Radon levels in Mitchell County, GAEPA zone 3
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 1 test
- Radon levels in Grady County, GAEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Thomas County, Cities and towns
Cities and towns in Thomas County
The Census Bureau estimates 46,368 residents in Thomas County for July 1, 2025, 584 more than in 2020 (+1.3%). That works out to 85 people per square mile of land. Its largest town, Thomasville, has 18,667 residents, 40.3% of the total. Reported testing is thin here: 15 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Thomasville to Barwick, CDC publishes no figure by town: each reads Thomas County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Thomasville | 18,667 | −1.1% | 40.3% |
| Boston | 1,251 | +3.4% | 2.7% |
| Meigsextends beyond Thomas County | 956 | +3.1% | Counted whole |
| Ochlocknee | 685 | +3.0% | 1.5% |
| Pavoextends beyond Thomas County | 601 | −2.1% | Counted whole |
| Coolidge | 558 | +4.3% | 1.2% |
| Barwickextends beyond Thomas County | 352 | −1.1% | Counted whole |
7 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). A place that extends beyond Thomas County is counted whole, so it has no share.
Thomas County, Homes
Homes in Thomas County
Of Thomas County's 20,957 homes, 65% are detached houses, against 66% across Georgia; 18% are mobile homes. Half of its homes were built before 1986, close to Georgia's 1991: 18% date from before 1960 and 26% from 2000 or later. 62% 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 | Thomas County | Georgia |
|---|---|---|
| Housing units | 20,957 | 4,483,873 |
| Detached houses | 65% | 66% |
| In buildings of 5 or more | 7% | 16% |
| Mobile homes | 18% | 8% |
| Built before 1960 | 18% | 12% |
| Built since 2000 | 26% | 33% |
| Middle year built | 1986 | 1991 |
| Owner-occupied | 62% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.