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Radon Levels in Rabun County, Georgia

EPA puts Rabun County in Zone 2, its middle radon zone, and 26.1% of its 69 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

    26.1%

    1.3 pts above GA

    Rabun
    26.1%
    Georgia
    24.8%

    69 tests, 2008 to 2017

  • Median result

    2.0pCi/L

    Below action level

    Rabun
    2.0 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    69

    44th of 57 by tests

    Rabun
    69
    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

    25 of 57

    Middle half

    Rabun
    26.1%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Rabun County

Starts at Rabun County's median, 2.0 pCi/L

2.0pCi/L

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

EPA’s reading of 2.0 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. Rabun County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Rabun County, At a glance

Rabun County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Rabun 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 Rabun County, 2008 to 2017, laboratory

Reported results by concentration band, Rabun County, 2008 to 2017, laboratory
Under 2 pCi/L: 49%2 to 4 pCi/L: 25%4 pCi/L and above: 26%

Of 69 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Rabun County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3449.3%
2 to 4 pCi/L1724.6%
4 pCi/L and above1826.1%
What these figures count

These are the 69 tests reported to CDC for Rabun 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

Rabun County, Compared

Rabun County radon figures, compared

Calculated by Radon411

Rabun County's 69 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.0 pCi/L and a maximum of 20.3 pCi/L, and 26.1% reached 4 pCi/L. Georgia as a whole (129 Georgia counties, pooled) comes to 24.8%: 1.3 points lower than here.

Among its state's counties it ranks 25th 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, 34 tests (49.3%) came in under 2 pCi/L, against 44.0% statewide, and 17 tests (24.6%) fell between 2 and 4, against 31.2% statewide. CDC's ten-year totals for Rabun County went from 51 tests (2005 to 2014) to 69 (2008 to 2017), the share going from 23.5% to 26.1%.

EPA's 1993 zone map puts Rabun 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 17.1% in Macon County, NC to 43.0% in Clay County, NC, with Macon County, NC below Rabun County.

Rabun County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Rabun County
Rabun County6926.1%2.0 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−1.3 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+9.6 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+22.2 points
Richmond Countylowest in the state320.0%1.4 pCi/L−26.1 points
Clay County, NCborders it32343.0%3.0 pCi/L+16.9 points
Oconee County, SCborders it2,46942.6%3.3 pCi/L+16.5 points
Habersham County, GAborders it12837.5%3.1 pCi/L+11.4 points
Towns County, GAborders it14431.9%2.8 pCi/L+5.8 points
Jackson County, NCborders it1,02627.7%2.2 pCi/L+1.6 points
Macon County, NCborders it1,35417.1%1.4 pCi/L−9.0 points
Where Rabun County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultRabun County testsRabun County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L3449.3%44.0%39.6%+5.3 points
2 to 4 pCi/L1724.6%31.2%24.7%−6.6 points
4 pCi/L and above1826.1%24.8%35.7%+1.3 points
Rabun 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
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
Rockdale County23 of 5724729.1%2.3 pCi/L
Jones County24 of 573129.0%2.2 pCi/L
Rabun County25 of 576926.1%2.0 pCi/L
Madison County26 of 5721126.1%2.4 pCi/L
Paulding County27 of 5728926.0%2.3 pCi/L
Newton County28 of 5718625.8%2.1 pCi/L
Stephens County29 of 577925.3%2.2 pCi/L
White County30 of 579125.3%2.7 pCi/L
Rabun County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 20176926.1%2.0 pCi/L20.3 pCi/L24.8%+4.2 points
2007 to 20167321.9%1.9 pCi/L11.7 pCi/L23.9%+2.2 points
2006 to 20156119.7%1.8 pCi/L9.7 pCi/L23.7%−3.8 points
2005 to 20145123.5%2.0 pCi/L9.7 pCi/L23.2%First on file

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

Rabun County, Geology

The ground under Rabun County

Predicted

USGS's geologic map puts all of Rabun County's mapped land in one class: moderate radon potential. The map puts 90.2% of Rabun County in the area it calls Georgiabama Thrust Stack (South) and 9.2% in Georgiabama Thrust Stack (North), with one smaller area beside them. USGS gives both a radon index of 9, in the moderate band (9 to 11).

USGS's geologic areas under Rabun County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Georgiabama Thrust Stack (South)Schist, amphibolite and granite.Moderate990.2%
Georgiabama Thrust Stack (North)Gneiss, phyllite, and schist.Moderate99.2%
Blue RidgeUranium-bearing granites, biotite and granitic gneiss.Moderate100.6%

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

Rabun County beside the ground around it

Rabun County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 6 counties that border it, 1 has more high-potential ground, Oconee County, SC the most at 11.0%.

Share of land by USGS radon potential: Rabun County, the 6 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Rabun CountyZone 2None100%None
Habersham CountyZone 2None100%None
Towns CountyZone 2None100%None
Oconee County, SCZone 2None89.0%11.0%
Clay County, NCZone 2None100%None
Macon County, NCZone 2None100%None
Jackson County, NCZone 2None100%None
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Rabun County, Local resources

Radon testing and mitigation in Rabun 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

Rabun County, Questions

Questions about radon in Rabun County

Are radon levels high in Rabun County?

Over the 2008 to 2017 laboratory totals, 26.1% of the radon tests reported to CDC for Rabun County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.0 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 24 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Rabun County?

Rabun County borders 6 counties: Habersham County, GA, Towns County, GA, Oconee County, SC, Clay County, NC, Macon County, NC and Jackson County, NC.

Products

Rabun County, Products

Testing a home in Rabun County

In Rabun County, 26.1% of 69 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 Rabun County; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Rabun County homes, compared

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Rabun County, Bordering counties

Counties bordering Rabun County

Calculated by Radon411

Rabun County, Cities and towns

Cities and towns in Rabun County

The Census Bureau estimates 17,764 residents in Rabun County for July 1, 2025, 838 more than in 2020 (+5.0%). That works out to 48 people per square mile of land. No town dominates: Clayton, the largest, has 2,089 residents, 11.8% of the total. CDC's 69 reported tests for 2008 to 2017 work out to 3.9 per 1,000 residents (2025 estimate), close to Georgia's 2.7.

From Clayton to Tallulah Falls, CDC publishes no figure by town: each reads Rabun County's.

The cities and towns in Rabun County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Clayton2,089+4.7%11.8%
Mountain City975+6.8%5.5%
Sky Valley492Level2.8%
Tiger425+4.4%2.4%
Dillard338+0.3%1.9%
Tallulah Fallsextends beyond Rabun County215+7.5%Counted whole

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

Rabun County, Homes

Homes in Rabun County

Rabun County is a place of houses on their own lots: 79% of its 12,142 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1987, close to Georgia's 1991: 12% date from before 1960 and 26% from 2000 or later. Owners live in 77% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in Rabun County, Georgia, 2019 to 2023
HomesRabun CountyGeorgia
Housing units12,1424,483,873
Detached houses79%66%
In buildings of 5 or more5%16%
Mobile homes12%8%
Built before 196012%12%
Built since 200026%33%
Middle year built19871991
Owner-occupied77%65%

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