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Radon Levels in Oconee County, Georgia

EPA puts Oconee County in Zone 2, its middle radon zone, and 19.0% of its 483 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

    19.0%

    5.8 pts below GA

    Oconee
    19.0%
    Georgia
    24.8%

    483 tests, 2008 to 2017

  • Median result

    1.8pCi/L

    Below action level

    Oconee
    1.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    483

    12th of 57 by tests

    Oconee
    483
    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

    41 of 57

    Middle half

    Oconee
    19.0%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Oconee County

Starts at Oconee County's median, 1.8 pCi/L

1.8pCi/L

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

EPA’s reading of 1.8 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Oconee County's median reported result, 2008 to 2017.

Interpret this reading

The data

Oconee County, At a glance

Oconee County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Oconee 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Oconee County, 2008 to 2017, laboratory
Under 2 pCi/L: 53%2 to 4 pCi/L: 28%4 pCi/L and above: 19%

Of 483 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Oconee County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L25753.2%
2 to 4 pCi/L13427.7%
4 pCi/L and above9219.0%
What these figures count

These are the 483 tests reported to CDC for Oconee 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

Oconee County, Compared

Oconee County radon figures, compared

Calculated by Radon411

Oconee County's 483 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.8 pCi/L and a maximum of 92.0 pCi/L, and 19.0% reached 4 pCi/L. Georgia as a whole (129 Georgia counties, pooled) comes to 24.8%: 5.8 points higher than here.

Among its state's counties it ranks 41st of 57 Georgia counties with 30 or more tests for the same period. Statewide for the same period, Barrow County reported the highest share (48.3%) and Richmond County the lowest (0.0%).

Below the action level, 257 tests (53.2%) came in under 2 pCi/L, against 44.0% statewide, and 134 tests (27.7%) fell between 2 and 4, against 31.2% statewide. CDC's ten-year totals for Oconee County went from 545 tests (2005 to 2014) to 483 (2008 to 2017), the share going from 14.7% to 19.0%.

EPA's 1993 zone map puts Oconee County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Next door, the shares run from 12.8% in Clarke County to 48.3% in Barrow County, with Greene County, Morgan County and Clarke County below Oconee County.

CDC also counts 22 tests taken after mitigation in Oconee County for the same period: tests in homes where a fix was already in.

Oconee County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Oconee County
Oconee County48319.0%1.8 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled+5.8 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+16.7 points
Douglas Countyhighest in the state35547.3%3.7 pCi/L+28.3 points
Richmond Countylowest in the state320.0%1.4 pCi/L−19.0 points
Barrow County, GAborders it32148.3%3.8 pCi/L+29.3 points
Walton County, GAborders it83042.2%3.3 pCi/L+23.2 points
Jackson County, GAborders it46040.0%3.2 pCi/L+21.0 points
Oglethorpe County, GAborders it7332.9%2.5 pCi/L+13.9 points
Greene County, GAborders it7417.6%1.9 pCi/L−1.4 points
Morgan County, GAborders it5416.7%1.5 pCi/L−2.3 points
Clarke County, GAborders it58412.8%1.5 pCi/L−6.2 points
Where Oconee County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultOconee County testsOconee County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L25753.2%44.0%39.6%+9.2 points
2 to 4 pCi/L13427.7%31.2%24.7%−3.5 points
4 pCi/L and above9219.0%24.8%35.7%−5.8 points
Oconee 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
Fulton County36 of 574,85820.8%2.2 pCi/L
Whitfield County37 of 5710220.6%1.2 pCi/L
Clayton County38 of 5715420.1%1.6 pCi/L
Floyd County39 of 5711619.8%1.9 pCi/L
Coweta County40 of 5754819.2%2.0 pCi/L
Oconee County41 of 5748319.0%1.8 pCi/L
Catoosa County42 of 575918.6%1.3 pCi/L
Elbert County43 of 5714518.6%1.9 pCi/L
DeKalb County44 of 573,47518.0%1.8 pCi/L
Cherokee County45 of 571,15417.6%2.0 pCi/L
Greene County46 of 577417.6%1.9 pCi/L
Oconee County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201748319.0%1.8 pCi/L92.0 pCi/L24.8%+1.5 points
2007 to 201651417.5%1.7 pCi/L92.0 pCi/L23.9%+1.4 points
2006 to 201550916.1%1.6 pCi/L92.0 pCi/L23.7%+1.4 points
2005 to 201454514.7%1.5 pCi/L92.0 pCi/L23.2%First on file

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

Oconee County, Geology

The ground under Oconee County

Predicted

USGS's geologic map puts all of Oconee 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).

USGS's geologic areas under Oconee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Georgiabama Thrust Stack (South)Schist, amphibolite and granite.Moderate9100%

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

Oconee County beside the ground around it

Oconee County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 7 counties that border it, none has as large a share of moderate-potential ground; Barrow County comes nearest at 100%.

Share of land by USGS radon potential: Oconee County, the 7 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Oconee CountyZone 2None100%None
Clarke CountyZone 2None100%None
Morgan CountyZone 27.8%92.2%None
Oglethorpe CountyZone 216.0%84.0%None
Walton CountyZone 2None100%None
Barrow CountyZone 2None100%None
Jackson CountyZone 2None100%None
Greene CountyZone 262.8%37.2%None
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Oconee County, Local resources

Radon testing and mitigation in Oconee 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

Oconee County, Questions

Questions about radon in Oconee County

Are radon levels high in Oconee County?

Over the 2008 to 2017 laboratory totals, 19.0% of the radon tests reported to CDC for Oconee County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.8 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 40 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Oconee County?

Oconee County borders 7 counties: Clarke County, Morgan County, Oglethorpe County, Walton County, Barrow County, Jackson County and Greene County.

Products

Oconee County, Products

Testing a home in Oconee County

In Oconee County, 19.0% of 483 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 Oconee County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Oconee County homes, compared

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Oconee County, Bordering counties

Counties bordering Oconee County

Calculated by Radon411

Oconee County, Cities and towns

Cities and towns in Oconee County

Oconee County is growing: the Census Bureau puts it at 44,893 residents on July 1, 2025, up 6.9% from 42,004 in 2020. That works out to 244 people per square mile of land. No town dominates: Watkinsville, the largest, has 4,131 residents, 9.2% of the total. Testing is reported here more often than across the state: CDC's 483 reported tests for 2008 to 2017 come to 10.8 for every 1,000 residents (2025 estimate), against 2.7 for Georgia.

From Watkinsville to Bishop, CDC publishes no figure by town: each reads Oconee County's.

The cities and towns in Oconee County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Watkinsville4,131+41.9%9.2%
Bogartextends beyond Oconee County1,326+3.4%Counted whole
North High Shoals576+4.9%1.3%
Bishop362+4.0%0.8%

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). A place that extends beyond Oconee County is counted whole, so it has no share.

Oconee County, Homes

Homes in Oconee County

Oconee County is a place of houses on their own lots: 87% of its 15,384 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1996, close to Georgia's 1991: 7% date from before 1960 and 42% 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 Oconee County, Georgia, 2019 to 2023
HomesOconee CountyGeorgia
Housing units15,3844,483,873
Detached houses87%66%
In buildings of 5 or more2%16%
Mobile homes4%8%
Built before 19607%12%
Built since 200042%33%
Middle year built19961991
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.