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Radon Levels in Jefferson County, Georgia

EPA puts Jefferson County in Zone 3, its lowest radon zone, and only 3 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

    0.0%

    Richmond County

    Richmond
    0.0%

    1 of 8 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    0.0%

    Richmond County, 29 miles

    Richmond
    0.0%
    Georgia
    23.9%

    Share at 4+ pCi/L, 35 tests, 2007 to 2016

  • Ground above low

    None

    26.5 pts below Georgia

    Jefferson
    0.0%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Jefferson
    3
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Jefferson County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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

Jefferson County, At a glance

Jefferson County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Jefferson County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

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 Jefferson County, 2008 to 2017, laboratory

CDC holds 3 reported tests for Jefferson County over the 2008 to 2017 laboratory totals, with a median of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Jefferson County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Jefferson 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).

How to read these figures

Jefferson County, Compared

Jefferson County radon figures, compared

Calculated by Radon411

CDC's largest figure for Jefferson County rests on 3 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 2.6 pCi/L, with a middle value of 0.6 pCi/L.

Richmond 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, Columbia County (35 miles away) at 9.7%, Laurens County (50 miles away) at 16.1% and Greene County (56 miles away) at 16.7% 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 Jefferson 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.

Georgia, the United States and the counties around Jefferson County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Georgia, pooled137 counties, pooled29,45523.9%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Barrow Countyhighest in the state34151.0%4.0 pCi/L
Dougherty Countylowest in the state320.0%0.6 pCi/L
McDuffie County, GAborders it1421.4%1.0 pCi/L
Emanuel County, GAborders it10.0%0.7 pCi/L
Burke County, GAborders it40.0%0.9 pCi/L
Washington County, GAborders it20.0%0.1 pCi/L
Johnson County, GAborders it10.0%2.2 pCi/L
Warren County, GAborders it10.0%0.8 pCi/L
Richmond County, GAborders it350.0%1.3 pCi/L
The nearest Georgia counties to Jefferson County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Richmond County29 mi350.0%1.3 pCi/L
Columbia County35 mi729.7%0.8 pCi/L
Laurens County50 mi3116.1%0.9 pCi/L
Greene County56 mi6616.7%1.6 pCi/L
Putnam County58 mi3327.3%2.2 pCi/L
Jones County66 mi3426.5%2.0 pCi/L
Oglethorpe County69 mi9629.2%2.3 pCi/L
Morgan County72 mi5817.2%1.3 pCi/L
Jefferson County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201730.0%0.6 pCi/L2.6 pCi/L24.8%Level
2007 to 201630.0%0.6 pCi/L2.6 pCi/L23.9%Level
2006 to 201530.0%0.6 pCi/L2.6 pCi/L23.7%Level
2005 to 201420.0%1.4 pCi/L2.6 pCi/L23.2%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Jefferson County, Geology

The ground under Jefferson County

Predicted

USGS's geologic map puts all of Jefferson 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).

USGS's geologic areas under Jefferson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Coastal PlainCretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon.Low8100%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Jefferson County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Jefferson County's is. None of the 8 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Jefferson County, the 8 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Jefferson CountyZone 3100%NoneNone
Glascock CountyZone 3100%NoneNone
Washington CountyZone 3100%NoneNone
Johnson CountyZone 3100%NoneNone
Burke CountyZone 3100%NoneNone
Warren CountyZone 3100%NoneNone
McDuffie CountyZone 3100%NoneNone
Richmond CountyZone 2100%NoneNone
Emanuel CountyZone 3100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

The map rates the ground, not the air in any home.

What it means

Jefferson County, Questions

Questions about radon in Jefferson County

Are radon levels high in Jefferson County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Jefferson County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Richmond 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 Jefferson County?

Jefferson County borders 8 counties: Glascock County, Washington County, Johnson County, Burke County, Warren County, McDuffie County, Richmond County and Emanuel County.

Products

Jefferson County, Products

Testing a home in Jefferson County

No CDC figure names Jefferson County; the nearest county with one, Richmond County (29 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 Jefferson County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Jefferson County homes, compared

Explore

Jefferson County, Bordering counties

Counties bordering Jefferson County

Calculated by Radon411

Jefferson County, Cities and towns

Cities and towns in Jefferson County

About 15,011 people live in Jefferson County by the Census Bureau's estimate for July 1, 2025, 666 fewer than in 2020 (−4.2%). That works out to 29 people per square mile of land. No town dominates: Louisville, the largest, has 2,237 residents, 14.9% of the total. Together its 6 incorporated places hold 44.5% of those residents; the other 55.5% live outside any of them. Reported testing is thin here: 3 tests over 2008 to 2017, or 0.2 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Louisville to Bartow, CDC publishes no figure by town: each reads Jefferson County's.

The cities and towns in Jefferson County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Louisville2,237−6.0%14.9%
Wrens2,100−5.1%14.0%
Wadley1,548−5.6%10.3%
Stapleton399−0.3%2.7%
Avera219−3.5%1.5%
Bartow177−5.3%1.2%

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).

Jefferson County, Homes

Homes in Jefferson County

Of Jefferson County's 7,165 homes, 62% are detached houses, against 66% across Georgia; 31% are mobile homes. The homes are older than Georgia's as a whole: half were built before 1982 (1991 for Georgia), and 21% date from before 1960. 68% 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 in Jefferson County, Georgia, 2019 to 2023
HomesJefferson CountyGeorgia
Housing units7,1654,483,873
Detached houses62%66%
In buildings of 5 or more3%16%
Mobile homes31%8%
Built before 196021%12%
Built since 200017%33%
Middle year built19821991
Owner-occupied68%65%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.