
Short-term kit![]()
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
EPA puts Heard County in Zone 2, its middle radon zone, and only 19 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
37.6%
Carroll County
3 of 4 neighbours have 30+ tests, 2007 to 2016
Nearest county
27.9%
Troup County, 19 miles
Share at 4+ pCi/L, 61 tests, 2007 to 2016
Ground above low
100.0%
73.5 pts above Georgia
Share of land USGS rates moderate or high potential
Tests reported
19
Too few for a share
2008 to 2017, laboratory
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Heard County
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
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
Heard County, At a glance
Predicted: EPA radon zone
Heard 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
CDC holds 19 reported tests for Heard County over the 2008 to 2017 laboratory totals, with a median of 1.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Heard County beside the counties around it is how this page reads it.
Only 19 tests were reported to CDC for Heard 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).
Heard County, Compared
CDC's largest figure for Heard County rests on 19 tests over the 2008 to 2017 laboratory totals, 5 of them at or above 4 pCi/L, so each test moves its share by 5.3 points and no rank or comparison is drawn from it. Results reached as high as 13.4 pCi/L, with a middle value of 1.8 pCi/L.
Of the counties bordering it, 3 have a figure over the 2007 to 2016 laboratory totals: Carroll County reported the largest share at or above 4 pCi/L, 37.6%, and Coweta County the smallest, 17.6%, with Troup County at 27.9% between. Farther out, Douglas County (35 miles away) at 44.5%, Fayette County (38 miles away) at 30.8% and Harris County (41 miles away) at 10.9% 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 Heard County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Heard County, Geology
USGS's geologic map puts all of Heard 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.
Heard County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 4 counties that border it, 1 has more high-potential ground, Randolph County, AL the most at 13.8%.
The map rates the ground, not the air in any home.
Local help
Heard County, Local resources
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
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
Heard County, Questions
Over the 2008 to 2017 laboratory totals, 26.3% of the radon tests reported to CDC for Heard County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of the counties bordering it, 3 have a figure over the 2007 to 2016 laboratory totals: Carroll County reported the largest share at or above 4 pCi/L, 37.6%, and Coweta County the smallest, 17.6%, with Troup County at 27.9% between.
Heard County borders 4 counties: Carroll County, GA, Randolph County, AL, Troup County, GA and Coweta County, GA.
Products
Heard County, Products
No CDC figure names Heard County; the nearest county with one, Troup County (19 miles away), reported 27.9% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Heard County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Heard County, Bordering counties
42.9%at or above 4 pCi/L
Median 3.5 pCi/L · 14 tests
37.6%at or above 4 pCi/L
Median 3.1 pCi/L · 165 tests
27.9%at or above 4 pCi/L
Median 2.7 pCi/L · 61 tests
17.6%at or above 4 pCi/L
Median 1.9 pCi/L · 517 tests
Heard County, Cities and towns
Heard County is growing: the Census Bureau puts it at 12,149 residents on July 1, 2025, up 6.2% from 11,445 in 2020. That works out to 41 people per square mile of land. No town dominates: Franklin, the largest, has 999 residents, 8.2% of the total. Together its 3 incorporated places hold 15.4% of those residents; the other 84.6% live outside any of them. Reported testing is thin here: 19 tests over 2008 to 2017, or 1.6 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Franklin to Centralhatchee, CDC publishes no figure by town: each reads Heard County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Franklin | 999 | +3.4% | 8.2% |
| Ephesus | 497 | +7.6% | 4.1% |
| Centralhatchee | 369 | +11.5% | 3.0% |
3 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).
Heard County, Homes
Of Heard County's 4,797 homes, 64% are detached houses, against 66% across Georgia; 29% are mobile homes. Half of its homes were built before 1984, close to Georgia's 1991: 18% date from before 1960 and 18% from 2000 or later. 72% 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 | Heard County | Georgia |
|---|---|---|
| Housing units | 4,797 | 4,483,873 |
| Detached houses | 64% | 66% |
| In buildings of 5 or more | 2% | 16% |
| Mobile homes | 29% | 8% |
| Built before 1960 | 18% | 12% |
| Built since 2000 | 18% | 33% |
| Middle year built | 1984 | 1991 |
| Owner-occupied | 72% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.