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Radon Levels in Macon County, Georgia

EPA puts Macon County in Zone 3, its lowest radon zone, and only 3 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    8.2%

    Houston County

    Houston
    8.2%

    1 of 7 neighbours have 30+ tests, 2007 to 2016

  • Nearest county

    8.2%

    Houston County, 23 miles

    Houston
    8.2%
    Georgia
    23.9%

    Share at 4+ pCi/L, 61 tests, 2007 to 2016

  • Ground above low

    None

    26.5 pts below Georgia

    Macon
    0.0%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Macon
    3
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Macon County

Starts at EPA's action level

4.0pCi/L

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

EPA’s reading of 4.0 pCi/L

At or above 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 at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.

The data

Macon County, At a glance

Macon County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Macon County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 3 reported tests for Macon County over the 2008 to 2017 laboratory totals, with a median of 1.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Macon County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Macon County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor 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

Macon County, Compared

Macon County radon figures, compared

Calculated by Radon411

CDC's largest figure for Macon County rests on 3 tests over the 2008 to 2017 laboratory totals, 1 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 5.6 pCi/L, with a middle value of 1.3 pCi/L.

Houston County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 8.2% of its tests at or above 4 pCi/L. Farther out, Bibb County (37 miles away) at 0.0%, Monroe County (46 miles away) at 23.8% and Muscogee County (50 miles away) at 2.1% have figures too. Pooled across 137 Georgia counties, 23.9% of reported tests reached that level; across every county in the country with a figure, 35.8%.

Statewide for the same period, Barrow County reported the highest share (51.0%) and Dougherty County the lowest (0.0%). EPA's 1993 map puts Macon County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Georgia, the United States and the counties around Macon County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Georgia, pooled137 counties, pooled29,45523.9%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Barrow Countyhighest in the state34151.0%4.0 pCi/L
Dougherty Countylowest in the state320.0%0.6 pCi/L
Peach County, GAborders it2100.0%4.4 pCi/L
Sumter County, GAborders it520.0%3.7 pCi/L
Crawford County, GAborders it714.3%1.2 pCi/L
Houston County, GAborders it618.2%1.5 pCi/L
Dooly County, GAborders it20.0%0.5 pCi/L
Schley County, GAborders it50.0%0.5 pCi/L
The nearest Georgia counties to Macon County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Houston County23 mi618.2%1.5 pCi/L
Bibb County37 mi960.0%1.0 pCi/L
Monroe County46 mi23523.8%1.8 pCi/L
Muscogee County50 mi952.1%0.8 pCi/L
Jones County54 mi3426.5%2.0 pCi/L
Harris County57 mi4610.9%1.9 pCi/L
Dougherty County58 mi320.0%0.6 pCi/L
Spalding County64 mi9733.0%2.9 pCi/L
Macon County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 2017333.3%1.3 pCi/L5.6 pCi/L24.8%+33.3 points
2007 to 201620.0%1.0 pCi/L1.3 pCi/L23.9%Level
2006 to 201520.0%1.0 pCi/L1.3 pCi/L23.7%Level
2005 to 201410.0%1.3 pCi/L1.3 pCi/L23.2%First on file

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

Macon County, Geology

The ground under Macon County

Predicted

USGS's geologic map puts all of Macon County's mapped land in one class: low radon potential. All of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Macon County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Coastal PlainCretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon.Low8100%

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

Macon County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Macon County's is. Of the 7 counties that border it, 1 has more moderate-potential ground, Crawford County the most at 0.1%.

Share of land by USGS radon potential: Macon County, the 7 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Macon CountyZone 3100%NoneNone
Schley CountyZone 3100%NoneNone
Dooly CountyZone 3100%NoneNone
Taylor CountyZone 3100%NoneNone
Sumter CountyZone 3100%NoneNone
Peach CountyZone 3100%NoneNone
Crawford CountyZone 399.9%0.1%None
Houston CountyZone 3100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

What it means

Macon County, Questions

Questions about radon in Macon County

Are radon levels high in Macon County?

Over the 2008 to 2017 laboratory totals, 33.3% of the radon tests reported to CDC for Macon County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Houston County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 8.2% of its tests at or above 4 pCi/L.

Which counties border Macon County?

Macon County borders 7 counties: Schley County, Dooly County, Taylor County, Sumter County, Peach County, Crawford County and Houston County.

Products

Macon County, Products

Testing a home in Macon County

No CDC figure names Macon County; the nearest county with one, Houston County (23 miles away), reported 8.2% of its tests at or above 4 pCi/L over the 2007 to 2016 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Macon County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Macon County homes, compared

Explore

Macon County, Bordering counties

Counties bordering Macon County

Calculated by Radon411

Macon County, Cities and towns

Cities and towns in Macon County

About 11,756 people live in Macon County by the Census Bureau's estimate for July 1, 2025, 262 fewer than in 2020 (−2.2%). That works out to 29 people per square mile of land. Its largest town, Montezuma, has 2,879 residents, 24.5% of the total. Together its 4 incorporated places hold 44.3% of those residents; the other 55.7% live outside any of them. Reported testing is thin here: 3 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Montezuma to Ideal, CDC publishes no figure by town: each reads Macon County's.

The cities and towns in Macon County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Montezuma2,879−5.3%24.5%
Marshallville978−5.5%8.3%
Oglethorpe955−3.9%8.1%
Ideal391−2.5%3.3%

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).

Macon County, Homes

Homes in Macon County

Of Macon County's 5,148 homes, 65% are detached houses, against 66% across Georgia; 26% are mobile homes. The homes are older than Georgia's as a whole: half were built before 1979 (1991 for Georgia), and 23% date from before 1960. 61% 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 Macon County, Georgia, 2019 to 2023
HomesMacon CountyGeorgia
Housing units5,1484,483,873
Detached houses65%66%
In buildings of 5 or more3%16%
Mobile homes26%8%
Built before 196023%12%
Built since 200013%33%
Middle year built19791991
Owner-occupied61%65%

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