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Radon Levels in Wilkes County, Georgia

EPA puts Wilkes County in Zone 3, its lowest radon zone, and only 10 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

    29.2%

    Oglethorpe County

    Oglethorpe
    29.2%
    Elbert
    16.9%

    2 of 6 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    29.2%

    Oglethorpe County, 21 miles

    Oglethorpe
    29.2%
    Georgia
    23.9%

    Share at 4+ pCi/L, 96 tests, 2007 to 2016

  • Ground above low

    None

    26.5 pts below Georgia

    Wilkes
    0.0%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    10

    Too few for a share

    Wilkes
    10
    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 Wilkes 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

Wilkes County, At a glance

Wilkes County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Wilkes 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 Wilkes County, 2008 to 2017, laboratory

CDC holds 10 reported tests for Wilkes County over the 2008 to 2017 laboratory totals, with a median of 2.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Wilkes County beside the counties around it is how this page reads it.

What these figures count

Only 10 tests were reported to CDC for Wilkes 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

Wilkes County, Compared

Wilkes County radon figures, compared

Calculated by Radon411

CDC's largest figure for Wilkes County rests on 10 tests over the 2008 to 2017 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 5.2 pCi/L, with a middle value of 2.0 pCi/L.

Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Oglethorpe County reported the largest share at or above 4 pCi/L, 29.2%, and Elbert County the smallest, 16.9%. Farther out, Greene County (28 miles away) at 16.7%, Columbia County (32 miles away) at 9.7% and Madison County (36 miles away) at 25.3% 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 Wilkes 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 Wilkes 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
Oglethorpe County, GAborders it9629.2%2.3 pCi/L
McDuffie County, GAborders it1421.4%1.0 pCi/L
Elbert County, GAborders it18916.9%1.5 pCi/L
Lincoln County, GAborders it30.0%0.1 pCi/L
Taliaferro County, GAborders it30.0%0.5 pCi/L
Warren County, GAborders it10.0%0.8 pCi/L
The nearest Georgia counties to Wilkes County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oglethorpe County21 mi9629.2%2.3 pCi/L
Elbert County24 mi18916.9%1.5 pCi/L
Greene County28 mi6616.7%1.6 pCi/L
Columbia County32 mi729.7%0.8 pCi/L
Madison County36 mi24125.3%2.2 pCi/L
Clarke County38 mi66211.5%1.5 pCi/L
Oconee County40 mi51417.5%1.7 pCi/L
Hart County41 mi10243.1%3.5 pCi/L
Wilkes County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20171020.0%2.0 pCi/L5.2 pCi/L24.8%−8.6 points
2007 to 2016728.6%1.0 pCi/L5.2 pCi/L23.9%+11.9 points
2006 to 2015616.7%1.1 pCi/L4.2 pCi/L23.7%+6.7 points
2005 to 20141010.0%0.5 pCi/L4.2 pCi/L23.2%First on file

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

Wilkes County, Geology

The ground under Wilkes County

Predicted

USGS's geologic map puts all of Wilkes County's mapped land in one class: low radon potential. All of it lies in the area the map calls Little River Thrust Stack, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Wilkes County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Little River Thrust StackBiotite and amphibolite gneiss, granite gneiss, mica schist.Low799.8%

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

Wilkes County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Wilkes County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Oglethorpe County the most at 84.0%.

Share of land by USGS radon potential: Wilkes County, the 6 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Wilkes CountyZone 3100%NoneNone
Taliaferro CountyZone 3100%NoneNone
Oglethorpe CountyZone 216.0%84.0%None
Lincoln CountyZone 3100%NoneNone
Elbert CountyZone 226.6%73.4%None
Warren CountyZone 3100%NoneNone
McDuffie 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

Wilkes County, Questions

Questions about radon in Wilkes County

Are radon levels high in Wilkes County?

Over the 2008 to 2017 laboratory totals, 20.0% of the radon tests reported to CDC for Wilkes County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of the counties bordering it, 2 have a figure over the 2007 to 2016 laboratory totals: Oglethorpe County reported the largest share at or above 4 pCi/L, 29.2%, and Elbert County the smallest, 16.9%.

Which counties border Wilkes County?

Wilkes County borders 6 counties: Taliaferro County, Oglethorpe County, Lincoln County, Elbert County, Warren County and McDuffie County.

Products

Wilkes County, Products

Testing a home in Wilkes County

No CDC figure names Wilkes County; the nearest county with one, Oglethorpe County (21 miles away), reported 29.2% 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 Wilkes County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Wilkes County homes, compared

Explore

Wilkes County, Bordering counties

Counties bordering Wilkes County

Calculated by Radon411

Wilkes County, Cities and towns

Cities and towns in Wilkes County

Wilkes County's population has barely moved since 2020: 9,540 residents on July 1, 2025 against 9,554 then, by the Census Bureau's estimates. That works out to 20 people per square mile of land. Its largest town, Washington, has 3,638 residents, 38.1% of the total. Together its 3 incorporated places hold 45.0% of those residents; the other 55.0% live outside any of them. Reported testing is thin here: 10 tests over 2008 to 2017, or 1.0 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Washington to Rayle, CDC publishes no figure by town: each reads Wilkes County's.

The cities and towns in Wilkes County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Washington3,638−2.7%38.1%
Tignall495+1.6%5.2%
Rayle156+1.3%1.6%

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).

Wilkes County, Homes

Homes in Wilkes County

Of Wilkes County's 5,210 homes, 65% are detached houses, against 66% across Georgia; 24% are mobile homes. The homes are older than Georgia's as a whole: half were built before 1976 (1991 for Georgia), and 22% date from before 1960. 67% 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 Wilkes County, Georgia, 2019 to 2023
HomesWilkes CountyGeorgia
Housing units5,2104,483,873
Detached houses65%66%
In buildings of 5 or more4%16%
Mobile homes24%8%
Built before 196022%12%
Built since 200016%33%
Middle year built19761991
Owner-occupied67%65%

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