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 Barrow County, Georgia
EPA puts Barrow County in Zone 2, its middle radon zone, and high results are common there: 48.3% of the 321 radon tests reported to CDC (2008 to 2017, laboratory totals) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
48.3%
23.5 pts above GA
- Barrow
- 48.3%
- Georgia
- 24.8%
321 tests, 2008 to 2017
Median result
3.8pCi/L
Below action level
- Barrow
- 3.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
321
16th of 57 by tests
- Barrow
- 321
- Fulton
- 4,858
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Georgia
1 of 57
Top quarter
- Barrow
- 48.3%
- Barrow
- 48.3%
By share, of 57 with 30+ tests
Read a result for Barrow County
Starts at Barrow County's median, 3.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.8 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Barrow County's median reported result, 2008 to 2017.
The data
Barrow County, At a glance
Barrow County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Barrow County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Barrow County, 2008 to 2017, laboratory
Under 2 pCi/L: 25%2 to 4 pCi/L: 27%4 pCi/L and above: 48%
Of 321 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 81 | 25.2% |
| 2 to 4 pCi/L | 85 | 26.5% |
| 4 pCi/L and above | 155 | 48.3% |
What these figures count
These are the 321 tests reported to CDC for Barrow County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Barrow County, Compared
Barrow County radon figures, compared
Calculated by Radon411In Barrow County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (155 of 321) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 12.6 points higher. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Barrow County runs 23.5 points above its state.
Of 6 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 12.8% (Clarke County) to 42.2% (Walton County). By share, Barrow County is 1st of 57 Georgia counties with 30 or more tests for the same period.
Half the tests came in under 3.8 pCi/L and half over it; the single highest reached 85.8 pCi/L. Below the action level, 81 tests (25.2%) came in under 2 pCi/L, against 44.0% statewide, and 85 tests (26.5%) fell between 2 and 4, against 31.2% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 48.3% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 31 tests taken after mitigation in Barrow County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Barrow County went from 270 tests (2005 to 2014) to 321 (2008 to 2017), the share going from 48.9% to 48.3%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Barrow County, Geology
The ground under Barrow County
PredictedUSGS's geologic map puts all of Barrow County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (South), to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Georgiabama Thrust Stack (South) | Schist, amphibolite and granite. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Barrow County beside the ground around it
Barrow County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Clarke County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Barrow County, Local resources
Radon testing and mitigation in Barrow 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
Barrow County, Questions
Questions about radon in Barrow County
Are radon levels high in Barrow County?
Over the 2008 to 2017 laboratory totals, 48.3% of the radon tests reported to CDC for Barrow County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.8 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, none reported a higher share; pooled, the state comes to 24.8%.
Which counties border Barrow County?
Barrow County borders 6 counties: Jackson County, Walton County, Clarke County, Gwinnett County, Hall County and Oconee County.
Products
Barrow County, Products
Testing a home in Barrow County
In Barrow County, 48.3% of 321 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Barrow County; a long-term test tells the year-round average.
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
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Barrow County, Bordering counties
Counties bordering Barrow County
Calculated by Radon411- Radon levels in Walton CountyEPA zone 2
42.2%at or above 4 pCi/L
Median 3.3 pCi/L · 830 tests · 6.1 points below Barrow County
- Radon levels in Jackson CountyEPA zone 2
40.0%at or above 4 pCi/L
Median 3.2 pCi/L · 460 tests · 8.3 points below Barrow County
- Radon levels in Hall CountyEPA zone 2
39.8%at or above 4 pCi/L
Median 3.2 pCi/L · 1,303 tests · 8.5 points below Barrow County
- Radon levels in Gwinnett CountyEPA zone 1
32.4%at or above 4 pCi/L
Median 2.7 pCi/L · 4,187 tests · 15.9 points below Barrow County
- Radon levels in Oconee CountyEPA zone 2
19.0%at or above 4 pCi/L
Median 1.8 pCi/L · 483 tests · 29.3 points below Barrow County
- Radon levels in Clarke CountyEPA zone 2
12.8%at or above 4 pCi/L
Median 1.5 pCi/L · 584 tests · 35.5 points below Barrow County
Barrow County, Cities and towns
Cities and towns in Barrow County
Barrow County is growing: the Census Bureau puts it at 99,773 residents on July 1, 2025, up 18.7% from 84,066 in 2020. That works out to 620 people per square mile of land. Its largest town, Winder, has 21,252 residents, 21.3% of the total. CDC's 321 reported tests for 2008 to 2017 work out to 3.2 per 1,000 residents (2025 estimate), close to Georgia's 2.7.
From Winder to Carl, CDC publishes no figure by town: each reads Barrow County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Winder | 21,252 | +15.7% | 21.3% |
| Braseltonextends beyond Barrow County | 18,496 | +35.9% | Counted whole |
| Auburnextends beyond Barrow County | 10,110 | +33.7% | Counted whole |
| Statham | 3,350 | +17.9% | 3.4% |
| Bethlehem | 822 | +16.1% | 0.8% |
| Carl | 238 | +17.8% | 0.2% |
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). A place that extends beyond Barrow County is counted whole, so it has no share.
Barrow County, Homes
Homes in Barrow County
Barrow County is a place of houses on their own lots: 85% of its 31,298 homes are detached single-family houses, against 66% across Georgia. Much of Barrow County is recent building: 51% of its homes have gone up since 2000 and the middle year built is 2000, against 1991 for Georgia. Owners live in 79% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.
| Homes | Barrow County | Georgia |
|---|---|---|
| Housing units | 31,298 | 4,483,873 |
| Detached houses | 85% | 66% |
| In buildings of 5 or more | 3% | 16% |
| Mobile homes | 6% | 8% |
| Built before 1960 | 7% | 12% |
| Built since 2000 | 51% | 33% |
| Middle year built | 2000 | 1991 |
| Owner-occupied | 79% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.