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 Calhoun County, Georgia
EPA puts Calhoun County in Zone 3, its lowest radon zone, and only 1 radon test from it is 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
0.0%
Dougherty County
- Dougherty
- 0.0%
1 of 6 neighbours have 30+ tests, 2007 to 2016
Nearest county
0.0%
Dougherty County, 24 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
- Calhoun
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Calhoun
- 1
- 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 Calhoun 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
Calhoun County, At a glance
Calhoun 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 Calhoun County, 2008 to 2017, laboratory
CDC holds 1 reported test for Calhoun County over the 2008 to 2017 laboratory totals, a result of 1.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Calhoun County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Calhoun 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: 2006 to 2017 (every CDC figure on file).
Calhoun County, Compared
Calhoun County radon figures, compared
Calculated by Radon411CDC's largest figure for Calhoun County rests on 1 test over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 1.1 pCi/L, with a middle value of 1.1 pCi/L.
Dougherty County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 0.0% of its tests at or above 4 pCi/L. Farther out, Muscogee County (69 miles away) at 2.1%, Harris County (85 miles away) at 10.9% and Houston County (85 miles away) at 8.2% 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 Calhoun 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.
Calhoun County, Geology
The ground under Calhoun County
PredictedUSGS's geologic map puts all of Calhoun 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 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Calhoun County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Calhoun County's is. Of the 6 counties that border it, 1 has more moderate-potential ground, Clay County the most at 0.1%.
The map rates the ground, not the air in any home.
Local help
Calhoun County, Local resources
Radon testing and mitigation in Calhoun 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
Calhoun County, Questions
Questions about radon in Calhoun County
Are radon levels high in Calhoun County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Calhoun County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Dougherty County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 0.0% of its tests at or above 4 pCi/L.
Which counties border Calhoun County?
Calhoun County borders 6 counties: Randolph County, Baker County, Terrell County, Early County, Clay County and Dougherty County.
Products
Calhoun County, Products
Testing a home in Calhoun County
No CDC figure names Calhoun County; the nearest county with one, Dougherty County (24 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 Calhoun 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
Calhoun County, Bordering counties
Counties bordering Calhoun County
Calculated by Radon411- Radon levels in Early CountyEPA zone 3
33.3%at or above 4 pCi/L
Median 0.1 pCi/L · 3 tests
- Radon levels in Randolph CountyEPA zone 3
16.7%at or above 4 pCi/L
Median 1.6 pCi/L · 6 tests
- Radon levels in Clay CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 1 test
- Radon levels in Dougherty CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 32 tests
- Radon levels in Baker CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Terrell CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Calhoun County, Cities and towns
Cities and towns in Calhoun County
About 5,413 people live in Calhoun County by the Census Bureau's estimate for July 1, 2025, 159 fewer than in 2020 (−2.9%). That works out to 19 people per square mile of land. Its largest town, Morgan, has 1,818 residents, 33.6% of the total. Reported testing is thin here: 1 test over 2008 to 2017, or 0.2 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Morgan to Leary, CDC publishes no figure by town: each reads Calhoun County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Morgan | 1,818 | +4.4% | 33.6% |
| Edison | 1,145 | −5.8% | 21.2% |
| Arlingtonextends beyond Calhoun County | 1,126 | −6.6% | Counted whole |
| Leary | 498 | −6.0% | 9.2% |
4 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 Calhoun County is counted whole, so it has no share.
Calhoun County, Homes
Homes in Calhoun County
Of Calhoun County's 2,033 homes, 63% are detached houses, against 66% across Georgia; 26% are mobile homes. The homes are older than Georgia's as a whole: half were built before 1977 (1991 for Georgia), and 31% date from before 1960. 63% 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 | Calhoun County | Georgia |
|---|---|---|
| Housing units | 2,033 | 4,483,873 |
| Detached houses | 63% | 66% |
| In buildings of 5 or more | 3% | 16% |
| Mobile homes | 26% | 8% |
| Built before 1960 | 31% | 12% |
| Built since 2000 | 17% | 33% |
| Middle year built | 1977 | 1991 |
| Owner-occupied | 63% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.