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Radon Levels in Fannin County, Georgia

EPA puts Fannin County in Zone 2, its middle radon zone, and high results are common there: 44.7% of the 300 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

    44.7%

    19.9 pts above GA

    Fannin
    44.7%
    Georgia
    24.8%

    300 tests, 2008 to 2017

  • Median result

    3.5pCi/L

    Below action level

    Fannin
    3.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    300

    17th of 57 by tests

    Fannin
    300
    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

    5 of 57

    Top quarter

    Fannin
    44.7%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Fannin County

Starts at Fannin County's median, 3.5 pCi/L

3.5pCi/L

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

EPA’s reading of 3.5 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. Fannin County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Fannin County, At a glance

Fannin County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Fannin 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 Fannin County, 2008 to 2017, laboratory

Reported results by concentration band, Fannin County, 2008 to 2017, laboratory
Under 2 pCi/L: 25%2 to 4 pCi/L: 31%4 pCi/L and above: 44%

Of 300 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Fannin County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L7424.7%
2 to 4 pCi/L9230.7%
4 pCi/L and above13444.7%
What these figures count

These are the 300 tests reported to CDC for Fannin 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

Fannin County, Compared

Fannin County radon figures, compared

Calculated by Radon411

In Fannin County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (134 of 300) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 9.0 points higher. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Fannin County runs 19.9 points above its state.

Of 6 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 21.8% (Dawson County) to 46.6% (Gilmer County). By share, Fannin County is 5th of 57 Georgia counties with 30 or more tests for the same period.

Half the tests came in under 3.5 pCi/L and half over it; the single highest reached 46.4 pCi/L. Below the action level, 74 tests (24.7%) came in under 2 pCi/L, against 44.0% statewide, and 92 tests (30.7%) 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 44.7% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 22 tests taken after mitigation in Fannin County for the same period: tests in homes where a fix was already in.

CDC's ten-year totals for Fannin County went from 217 tests (2005 to 2014) to 300 (2008 to 2017), the share going from 40.6% to 44.7%.

Fannin County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Fannin County
Fannin County30044.7%3.5 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−19.9 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−9.0 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+3.6 points
Richmond Countylowest in the state320.0%1.4 pCi/L−44.7 points
Gilmer County, GAborders it29046.6%3.8 pCi/L+1.9 points
Lumpkin County, GAborders it13646.3%3.6 pCi/L+1.6 points
Union County, GAborders it27644.6%3.3 pCi/L−0.1 points
Cherokee County, NCborders it1,04543.2%3.4 pCi/L−1.5 points
Polk County, TNborders it4327.9%2.2 pCi/L−16.8 points
Murray County, GAborders it1323.1%1.3 pCi/L−21.6 points
Dawson County, GAborders it14221.8%2.1 pCi/L−22.9 points
Where Fannin County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultFannin County testsFannin County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L7424.7%44.0%39.6%−19.3 points
2 to 4 pCi/L9230.7%31.2%24.7%−0.5 points
4 pCi/L and above13444.7%24.8%35.7%+19.9 points
Fannin 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
Barrow County1 of 5732148.3%3.8 pCi/L
Douglas County2 of 5735547.3%3.7 pCi/L
Gilmer County3 of 5729046.6%3.8 pCi/L
Lumpkin County4 of 5713646.3%3.6 pCi/L
Fannin County5 of 5730044.7%3.5 pCi/L
Union County6 of 5727644.6%3.3 pCi/L
Walton County7 of 5783042.2%3.3 pCi/L
Carroll County8 of 5719040.5%3.4 pCi/L
Hart County9 of 5710740.2%3.4 pCi/L
Jackson County10 of 5746040.0%3.2 pCi/L
Hall County11 of 571,30339.8%3.2 pCi/L
Fannin County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201730044.7%3.5 pCi/L46.4 pCi/L24.8%−1.7 points
2007 to 201625046.4%3.5 pCi/L46.4 pCi/L23.9%+4.0 points
2006 to 201525042.4%3.3 pCi/L46.4 pCi/L23.7%+1.8 points
2005 to 201421740.6%3.1 pCi/L46.4 pCi/L23.2%First on file

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

Fannin County, Geology

The ground under Fannin County

Predicted

USGS's geologic map puts all of Fannin County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Georgiabama Thrust Stack (North), to which USGS gives a radon index of 9, in the moderate band (9 to 11).

USGS's geologic areas under Fannin County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Georgiabama Thrust Stack (North)Gneiss, phyllite, and schist.Moderate9100%

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

Fannin County beside the ground around it

Fannin 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, 1 has more high-potential ground, Polk County, TN the most at 28.9%.

Share of land by USGS radon potential: Fannin County, the 7 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Fannin CountyZone 2None100%None
Union CountyZone 2None100%None
Gilmer CountyZone 2None100%None
Lumpkin CountyZone 2None100%None
Dawson CountyZone 2None100%None
Cherokee County, NCZone 1None100%None
Polk County, TNZone 20.1%71.0%28.9%
Murray CountyZone 366.9%33.1%None
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

Fannin County, Local resources

Radon testing and mitigation in Fannin 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

Fannin County, Questions

Questions about radon in Fannin County

Are radon levels high in Fannin County?

Over the 2008 to 2017 laboratory totals, 44.7% of the radon tests reported to CDC for Fannin County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.5 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 4 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Fannin County?

Fannin County borders 7 counties: Union County, GA, Gilmer County, GA, Lumpkin County, GA, Dawson County, GA, Cherokee County, NC, Polk County, TN and Murray County, GA.

Products

Fannin County, Products

Testing a home in Fannin County

In Fannin County, 44.7% of 300 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 Fannin County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Fannin County homes, compared

Explore

Fannin County, Bordering counties

Counties bordering Fannin County

Calculated by Radon411

Fannin County, Cities and towns

Cities and towns in Fannin County

The Census Bureau estimates 26,111 residents in Fannin County for July 1, 2025, 660 more than in 2020 (+2.6%). That works out to 67 people per square mile of land. No town dominates: Blue Ridge, the largest, has 1,297 residents, 5.0% of the total. Together its 3 incorporated places hold 10.6% of those residents; the other 89.4% live outside any of them. Testing is reported here more often than across the state: CDC's 300 reported tests for 2008 to 2017 come to 11.5 for every 1,000 residents (2025 estimate), against 2.7 for Georgia.

From Blue Ridge to Morganton, CDC publishes no figure by town: each reads Fannin County's.

The cities and towns in Fannin County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Blue Ridge1,297+2.8%5.0%
McCaysville1,180+2.0%4.5%
Morganton296+2.4%1.1%

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).

Fannin County, Homes

Homes in Fannin County

Fannin County is a place of houses on their own lots: 83% of its 18,128 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1994, close to Georgia's 1991: 11% date from before 1960 and 40% 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 Fannin County, Georgia, 2019 to 2023
HomesFannin CountyGeorgia
Housing units18,1284,483,873
Detached houses83%66%
In buildings of 5 or more4%16%
Mobile homes9%8%
Built before 196011%12%
Built since 200040%33%
Middle year built19941991
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.