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 Gilmer County, Georgia
EPA puts Gilmer County in Zone 2, its middle radon zone, and high results are common there: 46.6% of the 290 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
46.6%
21.8 pts above GA
- Gilmer
- 46.6%
- Georgia
- 24.8%
290 tests, 2008 to 2017
Median result
3.8pCi/L
Below action level
- Gilmer
- 3.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
290
18th of 57 by tests
- Gilmer
- 290
- 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
3 of 57
Top quarter
- Gilmer
- 46.6%
- Barrow
- 48.3%
By share, of 57 with 30+ tests
Read a result for Gilmer County
Starts at Gilmer 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. Gilmer County's median reported result, 2008 to 2017.
The data
Gilmer County, At a glance
Gilmer County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Gilmer 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 Gilmer County, 2008 to 2017, laboratory
Under 2 pCi/L: 25%2 to 4 pCi/L: 29%4 pCi/L and above: 46%
Of 290 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 72 | 24.8% |
| 2 to 4 pCi/L | 83 | 28.6% |
| 4 pCi/L and above | 135 | 46.6% |
What these figures count
These are the 290 tests reported to CDC for Gilmer 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).
Gilmer County, Compared
Gilmer County radon figures, compared
Calculated by Radon411In Gilmer County, about 5 in 10 reported tests over the 2008 to 2017 laboratory totals (135 of 290) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 10.9 points higher. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Gilmer County runs 21.8 points above its state.
Of 4 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 21.8% (Dawson County) to 44.7% (Fannin County). By share, Gilmer County is 3rd 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 33.4 pCi/L. Below the action level, 72 tests (24.8%) came in under 2 pCi/L, against 44.0% statewide, and 83 tests (28.6%) 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 46.6% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 18 tests taken after mitigation in Gilmer County for the same period: tests in homes where a fix was already in.
CDC's ten-year totals for Gilmer County went from 140 tests (2005 to 2014) to 290 (2008 to 2017), the share going from 33.6% to 46.6%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Gilmer County, Geology
The ground under Gilmer County
PredictedUSGS's geologic map puts all of Gilmer County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (North), 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 (North) | Gneiss, phyllite, and schist. | 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.
Gilmer County beside the ground around it
Gilmer County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Dawson County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Gilmer County, Local resources
Radon testing and mitigation in Gilmer 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
Gilmer County, Questions
Questions about radon in Gilmer County
Are radon levels high in Gilmer County?
Over the 2008 to 2017 laboratory totals, 46.6% of the radon tests reported to CDC for Gilmer 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, 2 reported a higher share; pooled, the state comes to 24.8%.
Which counties border Gilmer County?
Gilmer County borders 5 counties: Pickens County, Fannin County, Murray County, Dawson County and Gordon County.
Products
Gilmer County, Products
Testing a home in Gilmer County
In Gilmer County, 46.6% of 290 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 Gilmer County; a long-term test tells the year-round average.
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
Gilmer County, Bordering counties
Counties bordering Gilmer County
Calculated by Radon411- Radon levels in Fannin CountyEPA zone 2
44.7%at or above 4 pCi/L
Median 3.5 pCi/L · 300 tests · 1.9 points below Gilmer County
- Radon levels in Pickens CountyEPA zone 2
37.6%at or above 4 pCi/L
Median 3.1 pCi/L · 133 tests · 9.0 points below Gilmer County
- Radon levels in Gordon CountyEPA zone 3
31.4%at or above 4 pCi/L
Median 2.1 pCi/L · 35 tests · 15.2 points below Gilmer County
- Radon levels in Murray CountyEPA zone 3
23.1%at or above 4 pCi/L
Median 1.3 pCi/L · 13 tests · 23.5 points below Gilmer County
- Radon levels in Dawson CountyEPA zone 2
21.8%at or above 4 pCi/L
Median 2.1 pCi/L · 142 tests · 24.8 points below Gilmer County
Gilmer County, Cities and towns
Cities and towns in Gilmer County
Gilmer County is growing: the Census Bureau puts it at 33,894 residents on July 1, 2025, up 7.9% from 31,420 in 2020. That works out to 80 people per square mile of land. No town dominates: Ellijay, the largest, has 2,008 residents, 5.9% of the total. Together its 2 incorporated places hold 11.3% of those residents; the other 88.7% live outside any of them. Testing is reported here more often than across the state: CDC's 290 reported tests for 2008 to 2017 come to 8.6 for every 1,000 residents (2025 estimate), against 2.7 for Georgia.
From Ellijay to East Ellijay, CDC publishes no figure by town: each reads Gilmer County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Ellijay | 2,008 | +9.2% | 5.9% |
| East Ellijay | 1,816 | +177.7% | 5.4% |
2 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).
Gilmer County, Homes
Homes in Gilmer County
Gilmer County is a place of houses on their own lots: 79% of its 18,159 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1997, close to Georgia's 1991: 7% date from before 1960 and 42% from 2000 or later. Owners live in 81% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.
| Homes | Gilmer County | Georgia |
|---|---|---|
| Housing units | 18,159 | 4,483,873 |
| Detached houses | 79% | 66% |
| In buildings of 5 or more | 3% | 16% |
| Mobile homes | 16% | 8% |
| Built before 1960 | 7% | 12% |
| Built since 2000 | 42% | 33% |
| Middle year built | 1997 | 1991 |
| Owner-occupied | 81% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.