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Radon Levels in Spalding County, Georgia

EPA puts Spalding County in Zone 2, its middle radon zone, and 33.6% of its 107 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

    33.6%

    8.8 pts above GA

    Spalding
    33.6%
    Georgia
    24.8%

    107 tests, 2008 to 2017

  • Median result

    2.9pCi/L

    Below action level

    Spalding
    2.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    107

    36th of 57 by tests

    Spalding
    107
    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

    16 of 57

    Middle half

    Spalding
    33.6%
    Barrow
    48.3%

    By share, of 57 with 30+ tests

Read a result for Spalding County

Starts at Spalding County's median, 2.9 pCi/L

2.9pCi/L

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

EPA’s reading of 2.9 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. Spalding County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Spalding County, At a glance

Spalding County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Spalding 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 Spalding County, 2008 to 2017, laboratory

Reported results by concentration band, Spalding County, 2008 to 2017, laboratory
Under 2 pCi/L: 28%2 to 4 pCi/L: 38%4 pCi/L and above: 34%

Of 107 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Spalding County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3028.0%
2 to 4 pCi/L4138.3%
4 pCi/L and above3633.6%
What these figures count

These are the 107 tests reported to CDC for Spalding 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

Spalding County, Compared

Spalding County radon figures, compared

Calculated by Radon411

In Spalding County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (36 of 107) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 2.1 points lower. Across 129 Georgia counties pooled together, 24.8% of tests reached that level, so Spalding County runs 8.8 points above its state.

Of 4 neighbours with a figure, none reported a larger share at or above 4 pCi/L; the spread is 19.2% (Coweta County) to 30.5% (Fayette County). By share, Spalding County is 16th of 57 Georgia counties with 30 or more tests for the same period.

Half the tests came in under 2.9 pCi/L and half over it; the single highest reached 50.7 pCi/L. Below the action level, 30 tests (28.0%) came in under 2 pCi/L, against 44.0% statewide, and 41 tests (38.3%) 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 33.6% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential.

CDC's ten-year totals for Spalding County went from 63 tests (2005 to 2014) to 107 (2008 to 2017), the share going from 34.9% to 33.6%.

Spalding County against Georgia, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Spalding County
Spalding County10733.6%2.9 pCi/LThis county
Georgia, pooled129 counties, pooled30,15224.8%Not pooled−8.8 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+2.1 points
Barrow Countyhighest in the state32148.3%3.8 pCi/L+14.7 points
Richmond Countylowest in the state320.0%1.4 pCi/L−33.6 points
Lamar County, GAborders it1540.0%2.1 pCi/L+6.4 points
Pike County, GAborders it2638.5%3.2 pCi/L+4.9 points
Fayette County, GAborders it87330.5%2.6 pCi/L−3.1 points
Henry County, GAborders it38422.7%2.1 pCi/L−10.9 points
Clayton County, GAborders it15420.1%1.6 pCi/L−13.5 points
Coweta County, GAborders it54819.2%2.0 pCi/L−14.4 points
Butts County, GAborders it156.7%2.8 pCi/L−26.9 points
Meriwether County, GAborders it224.5%1.6 pCi/L−29.1 points
Where Spalding County's reported results fell, 2008 to 2017, laboratory, beside Georgia and the United States
ResultSpalding County testsSpalding County shareGeorgia shareU.S. shareAgainst Georgia
Under 2 pCi/L3028.0%44.0%39.6%−16.0 points
2 to 4 pCi/L4138.3%31.2%24.7%+7.1 points
4 pCi/L and above3633.6%24.8%35.7%+8.8 points
Spalding 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
Hall County11 of 571,30339.8%3.2 pCi/L
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
Spalding County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201710733.6%2.9 pCi/L50.7 pCi/L24.8%+0.6 points
2007 to 20169733.0%2.9 pCi/L50.7 pCi/L23.9%+1.5 points
2006 to 20158931.5%2.9 pCi/L50.7 pCi/L23.7%−3.4 points
2005 to 20146334.9%2.9 pCi/L50.7 pCi/L23.2%First on file

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

Spalding County, Geology

The ground under Spalding County

Predicted

USGS's geologic map puts all of Spalding 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 Spalding 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.

Spalding County beside the ground around it

Spalding County has more moderate-potential ground than Georgia as a whole: 100% of its land against 26.5%. Of the 8 counties that border it, none has as large a share of moderate-potential ground; Clayton County comes nearest at 100%.

Share of land by USGS radon potential: Spalding County, the 8 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Spalding CountyZone 2None100%None
Lamar CountyZone 2None100%None
Pike CountyZone 2None100%None
Henry CountyZone 2None100%None
Fayette CountyZone 2None100%None
Clayton CountyZone 2None100%None
Butts CountyZone 20.6%99.4%None
Meriwether CountyZone 2None100%None
Coweta CountyZone 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

Spalding County, Local resources

Radon testing and mitigation in Spalding 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

Spalding County, Questions

Questions about radon in Spalding County

Are radon levels high in Spalding County?

Over the 2008 to 2017 laboratory totals, 33.6% of the radon tests reported to CDC for Spalding County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.9 pCi/L. Of 57 Georgia counties with 30 or more tests for the same period, 15 reported a higher share; pooled, the state comes to 24.8%.

Which counties border Spalding County?

Spalding County borders 8 counties: Lamar County, Pike County, Henry County, Fayette County, Clayton County, Butts County, Meriwether County and Coweta County.

Products

Spalding County, Products

Testing a home in Spalding County

In Spalding County, 33.6% of 107 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 Spalding County; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Spalding County homes, compared

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Spalding County, Bordering counties

Counties bordering Spalding County

Calculated by Radon411

Spalding County, Cities and towns

Cities and towns in Spalding County

The Census Bureau estimates 70,775 residents in Spalding County for July 1, 2025, 3,319 more than in 2020 (+4.9%). That works out to 361 people per square mile of land. Its largest town, Griffin, has 23,896 residents, 33.8% of the total. Reported testing is thin here: 107 tests over 2008 to 2017, or 1.5 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Griffin to Sunny Side, CDC publishes no figure by town: each reads Spalding County's.

The 2 largest cities and towns in Spalding County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Griffin23,896+2.0%33.8%
Orchard Hill236+6.8%0.3%
  • Sunny Side

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).

Spalding County, Homes

Homes in Spalding County

Spalding County is a place of houses on their own lots: 77% of its 28,338 homes are detached single-family houses, against 66% across Georgia. Half of its homes were built before 1984, close to Georgia's 1991: 19% date from before 1960 and 27% from 2000 or later. 64% 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 Spalding County, Georgia, 2019 to 2023
HomesSpalding CountyGeorgia
Housing units28,3384,483,873
Detached houses77%66%
In buildings of 5 or more7%16%
Mobile homes6%8%
Built before 196019%12%
Built since 200027%33%
Middle year built19841991
Owner-occupied64%65%

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