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Radon Levels in Oglethorpe County, Georgia

EPA puts Oglethorpe County in Zone 2, its middle radon zone, and 32.9% of its 73 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    32.9%

    8.1 pts above GA

    Oglethorpe
    32.9%
    Georgia
    24.8%

    73 tests, 2008 to 2017

  • Median result

    2.5pCi/L

    Below action level

    Oglethorpe
    2.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    73

    43rd of 57 by tests

    Oglethorpe
    73
    Fulton
    4,858

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Georgia

    17 of 57

    Middle half

    Oglethorpe
    32.9%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Oglethorpe County

Starts at Oglethorpe County's median, 2.5 pCi/L

2.5pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.5 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Oglethorpe County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Oglethorpe County, At a glance

Oglethorpe County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Oglethorpe County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 84% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Oglethorpe County, 2008 to 2017, laboratory
Under 2 pCi/L: 42%2 to 4 pCi/L: 25%4 pCi/L and above: 33%

Of 73 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Oglethorpe County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3142.5%
2 to 4 pCi/L1824.7%
4 pCi/L and above2432.9%
What these figures count

These are the 73 tests reported to CDC for Oglethorpe County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not 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

Oglethorpe County, Compared

Oglethorpe County radon figures, compared

Calculated by Radon411

In Oglethorpe County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (24 of 73) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 2.8 points lower. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Oglethorpe County runs 8.1 points above its state.

Of 5 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 12.8% (Clarke County) to 26.1% (Madison County). By share, Oglethorpe County is 17th of 57 Georgia counties with 30 or more tests for the same period.

Half the tests came in under 2.5 pCi/L and half over it; the single highest reached 17.1 pCi/L. Below the action level, 31 tests (42.5%) came in under 2 pCi/L, against 44.0% statewide, and 18 tests (24.7%) fell between 2 and 4, against 31.2% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 32.9% share point the same way here. USGS geology rates 84% of the county's land moderate radon potential.

CDC's ten-year totals for Oglethorpe County went from 106 tests (2005 to 2014) to 73 (2008 to 2017), the share going from 24.5% to 32.9%.

Oglethorpe County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Oglethorpe County
Oglethorpe County7332.9%2.5 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−8.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+2.8 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+15.4 points
Richmond Countylowest in the state320.0%1.4 pCi/L−32.9 points
Madison County, GAborders it21126.1%2.4 pCi/L−6.8 points
Wilkes County, GAborders it1020.0%2.0 pCi/L−12.9 points
Oconee County, GAborders it48319.0%1.8 pCi/L−13.9 points
Elbert County, GAborders it14518.6%1.9 pCi/L−14.3 points
Greene County, GAborders it7417.6%1.9 pCi/L−15.3 points
Clarke County, GAborders it58412.8%1.5 pCi/L−20.1 points
Where Oglethorpe County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultOglethorpe County testsOglethorpe County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L3142.5%44.0%39.6%−1.5 points
2 to 4 pCi/L1824.7%31.2%24.7%−6.5 points
4 pCi/L and above2432.9%24.8%35.7%+8.1 points
Oglethorpe County ranked among the 57 Georgia counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Pickens County12 of 5713337.6%3.1 pCi/L
Habersham County13 of 5712837.5%3.1 pCi/L
Banks County14 of 575735.1%2.8 pCi/L
Troup County15 of 575633.9%2.9 pCi/L
Spalding County16 of 5710733.6%2.9 pCi/L
Oglethorpe County17 of 577332.9%2.5 pCi/L
Gwinnett County18 of 574,18732.4%2.7 pCi/L
Towns County19 of 5714431.9%2.8 pCi/L
Gordon County20 of 573531.4%2.1 pCi/L
Fayette County21 of 5787330.5%2.6 pCi/L
Putnam County22 of 573030.0%2.2 pCi/L
Oglethorpe County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20177332.9%2.5 pCi/L17.1 pCi/L24.8%+3.7 points
2007 to 20169629.2%2.3 pCi/L22.6 pCi/L23.9%−0.7 points
2006 to 201510729.9%2.5 pCi/L22.6 pCi/L23.7%+5.4 points
2005 to 201410624.5%2.0 pCi/L22.6 pCi/L23.2%First on file

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

Oglethorpe County, Geology

The ground under Oglethorpe County

Predicted

Most of the ground under Oglethorpe County is one class on USGS's geologic map: 84.0% of its land is moderate radon potential, with 16.0% low. The map puts 84.0% of Oglethorpe County in the area it calls Georgiabama Thrust Stack (South) and 16.0% in Little River Thrust Stack. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 7, in the low band (5 to 8).

USGS's geologic areas under Oglethorpe County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Georgiabama Thrust Stack (South)Schist, amphibolite and granite.Moderate984.0%
Little River Thrust StackBiotite and amphibolite gneiss, granite gneiss, mica schist.Low716.0%

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

Oglethorpe County beside the ground around it

Oglethorpe County has more moderate-potential ground than Georgia as a whole: 84.0% of its land against 26.5%. Of the 7 counties that border it, 3 have more moderate-potential ground, Clarke County the most at 100%.

Share of land by USGS radon potential: Oglethorpe County, the 7 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Oglethorpe CountyZone 216.0%84.0%None
Wilkes CountyZone 3100%NoneNone
Clarke CountyZone 2None100%None
Madison CountyZone 2None100%None
Oconee CountyZone 2None100%None
Elbert CountyZone 226.6%73.4%None
Greene CountyZone 262.8%37.2%None
Taliaferro CountyZone 3100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Oglethorpe County, Local resources

Radon testing and mitigation in Oglethorpe County

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

Oglethorpe County, Questions

Questions about radon in Oglethorpe County

Are radon levels high in Oglethorpe County?

Over the 2008 to 2017 laboratory totals, 32.9% of the radon tests reported to CDC for Oglethorpe County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 16 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Oglethorpe County?

Oglethorpe County borders 7 counties: Wilkes County, Clarke County, Madison County, Oconee County, Elbert County, Greene County and Taliaferro County.

Products

Oglethorpe County, Products

Testing a home in Oglethorpe County

In Oglethorpe County, 32.9% of 73 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 24.8% pooled across Georgia. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Oglethorpe County; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Oglethorpe County homes, compared

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Oglethorpe County, Bordering counties

Counties bordering Oglethorpe County

Calculated by Radon411

Oglethorpe County, Cities and towns

Cities and towns in Oglethorpe County

Oglethorpe County is growing: the Census Bureau puts it at 16,415 residents on July 1, 2025, up 10.4% from 14,869 in 2020. That works out to 37 people per square mile of land. No town dominates: Crawford, the largest, has 918 residents, 5.6% of the total. Together its 4 incorporated places hold 11.0% of those residents; the other 89.0% live outside any of them. Testing is reported here more often than across the state: CDC's 73 reported tests for 2008 to 2017 come to 4.4 for every 1,000 residents (2025 estimate), against 2.7 for Georgia.

From Crawford to Lexington, CDC publishes no figure by town: each reads Oglethorpe County's.

The cities and towns in Oglethorpe County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Crawford918+10.6%5.6%
Arnoldsville445+9.9%2.7%
Maxeys225+13.1%1.4%
Lexington218+9.0%1.3%

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).

Oglethorpe County, Homes

Homes in Oglethorpe County

Of Oglethorpe County's 6,450 homes, 71% are detached houses, against 66% across Georgia; 25% are mobile homes. Half of its homes were built before 1988, close to Georgia's 1991: 11% date from before 1960 and 29% from 2000 or later. Owners live in 82% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in Oglethorpe County, Georgia, 2019 to 2023
HomesOglethorpe CountyGeorgia
Housing units6,4504,483,873
Detached houses71%66%
In buildings of 5 or more2%16%
Mobile homes25%8%
Built before 196011%12%
Built since 200029%33%
Middle year built19881991
Owner-occupied82%65%

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