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Radon Levels in Dade County, Georgia

EPA puts Dade County in Zone 3, its lowest radon zone, and only 17 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

    29.6%

    Marion County

    Marion
    29.6%
    DeKalb
    9.5%

    5 of 5 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    19.2%

    Walker County, 14 miles

    Walker
    19.2%
    Georgia
    23.9%

    Share at 4+ pCi/L, 52 tests, 2007 to 2016

  • Ground above low

    10.4%

    16.1 pts below Georgia

    Dade
    10.4%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    22

    Too few for a share

    Dade
    22
    Needed
    30

    2007 to 2016, 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 Dade 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

Dade County, At a glance

Dade County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Dade 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 90% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Dade County, 2008 to 2017, laboratory

CDC holds 17 reported tests for Dade County over the 2008 to 2017 laboratory totals, with a median of 1.5 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Dade County beside the counties around it is how this page reads it.

What these figures count

Only 17 tests were reported to CDC for Dade 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

Dade County, Compared

Dade County radon figures, compared

Calculated by Radon411

CDC's largest figure for Dade County rests on 22 tests over the 2007 to 2016 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 4.5 points and no rank or comparison is drawn from it. Results reached as high as 11.4 pCi/L, with a middle value of 1.4 pCi/L.

Of the counties bordering it, 5 have a figure over the 2007 to 2016 laboratory totals: Marion County, TN reported the largest share at or above 4 pCi/L, 29.6%, and DeKalb County, AL the smallest, 9.5%, with Walker County at 19.2%, Hamilton County, TN at 18.8% and Jackson County, AL at 17.4% between. Farther out, Catoosa County (21 miles away) at 17.9%, Whitfield County (31 miles away) at 16.8% and Gordon County (43 miles away) at 34.4% 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 Dade County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 90% of the county's land low radon potential.

Georgia, the United States and the counties around Dade 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
Marion County, TNborders it7129.6%1.8 pCi/L
Walker County, GAborders it5219.2%1.4 pCi/L
Hamilton County, TNborders it1,09518.8%1.7 pCi/L
Jackson County, ALborders it24217.4%1.5 pCi/L
DeKalb County, ALborders it639.5%0.9 pCi/L
The nearest Georgia counties to Dade County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Walker County14 mi5219.2%1.4 pCi/L
Catoosa County21 mi5617.9%1.1 pCi/L
Whitfield County31 mi9516.8%1.1 pCi/L
Gordon County43 mi3234.4%2.1 pCi/L
Floyd County44 mi11717.1%1.7 pCi/L
Bartow County57 mi18323.5%2.1 pCi/L
Gilmer County61 mi18136.5%3.1 pCi/L
Pickens County65 mi10939.4%2.9 pCi/L
Dade County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20171717.6%1.5 pCi/L11.4 pCi/L24.8%−9.7 points
2007 to 20162227.3%1.4 pCi/L11.4 pCi/L23.9%Level
2006 to 20152227.3%1.4 pCi/L11.4 pCi/L23.7%−8.0 points
2005 to 20141735.3%1.3 pCi/L11.4 pCi/L23.2%First on file

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

Dade County, Geology

The ground under Dade County

Predicted

Most of the ground under Dade County is one class on USGS's geologic map: 89.6% of its land is low radon potential, with 10.3% high and 0.1% moderate. The map puts 64.0% of Dade County in the area it calls Rome-Kingston Thrust Stack and 25.6% in Appalachian Plateau, with one smaller area beside them. USGS gives both a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Dade County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Rome-Kingston Thrust StackLimestone and shale.Low864.0%
Appalachian PlateauLimestone, sandstone, carbonaceous shale, coalLow825.6%
Interior Low PlateausMississippian carbonate rocks and shales.High1210.3%

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

Dade County beside the ground around it

Dade County has more high-potential ground than Georgia as a whole: 10.3% of its land against none. Of the 5 counties that border it, 3 have more high-potential ground, Jackson County, AL the most at 84.8%.

Share of land by USGS radon potential: Dade County, the 5 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Dade CountyZone 389.6%0.1%10.3%
Walker CountyZone 2100%NoneNone
DeKalb County, ALZone 2None99.7%0.2%
Marion County, TNZone 250.7%None49.3%
Jackson County, ALZone 11.1%14.2%84.8%
Hamilton County, TNZone 220.4%None79.6%
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

What it means

Dade County, Questions

Questions about radon in Dade County

Are radon levels high in Dade County?

Over the 2008 to 2017 laboratory totals, 17.6% of the radon tests reported to CDC for Dade County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.5 pCi/L. Of the counties bordering it, 5 have a figure over the 2007 to 2016 laboratory totals: Marion County, TN reported the largest share at or above 4 pCi/L, 29.6%, and DeKalb County, AL the smallest, 9.5%, with Walker County at 19.2%, Hamilton County, TN at 18.8% and Jackson County, AL at 17.4% between.

Which counties border Dade County?

Dade County borders 5 counties: Walker County, GA, DeKalb County, AL, Marion County, TN, Jackson County, AL and Hamilton County, TN.

Products

Dade County, Products

Testing a home in Dade County

No CDC figure names Dade County; the nearest county with one, Walker County (14 miles away), reported 19.2% 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 Dade County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Dade County homes, compared

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Dade County, Bordering counties

Counties bordering Dade County

Calculated by Radon411

Dade County, Cities and towns

Cities and towns in Dade County

Dade County's population has barely moved since 2020: 16,154 residents on July 1, 2025 against 16,233 then, by the Census Bureau's estimates. That works out to 93 people per square mile of land. Trenton, its one incorporated place, has 2,236 residents, 13.8% of the total. Reported testing is thin here: 22 tests over 2007 to 2016, or 1.4 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.6.

Trenton is the one incorporated place here; CDC publishes no figure by town, so it reads Dade County's.

Trenton, Dade County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Trenton2,236+2.3%13.8%

One incorporated place, 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).

Dade County, Homes

Homes in Dade County

Of Dade County's 7,413 homes, 74% are detached houses, against 66% across Georgia; 18% are mobile homes. Half of its homes were built before 1988, close to Georgia's 1991: 11% date from before 1960 and 28% from 2000 or later. Owners live in 78% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in Dade County, Georgia, 2019 to 2023
HomesDade CountyGeorgia
Housing units7,4134,483,873
Detached houses74%66%
In buildings of 5 or more5%16%
Mobile homes18%8%
Built before 196011%12%
Built since 200028%33%
Middle year built19881991
Owner-occupied78%65%

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