Skip to content
RADON411

Locations and reports

Radon Levels in McIntosh County, Georgia

EPA puts McIntosh County in Zone 3, its lowest radon zone, and only 7 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

How to test this homeFind a certified tester

  • Nearest county

    0.0%

    Chatham County, 39 miles

    Chatham
    0.0%
    Georgia
    23.9%

    Share at 4+ pCi/L, 47 tests, 2007 to 2016

  • Ground above low

    None

    26.5 pts below Georgia

    McIntosh
    0.0%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    7

    Too few for a share

    McIntosh
    7
    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 McIntosh 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.

Interpret this readingWhat a fix costs

The data

McIntosh County, At a glance

McIntosh County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for McIntosh 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 91% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 7 reported tests for McIntosh County over the 2008 to 2017 laboratory totals, with a median of 0.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). McIntosh County beside the counties around it is how this page reads it.

What these figures count

Only 7 tests were reported to CDC for McIntosh 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

McIntosh County, Compared

McIntosh County radon figures, compared

Calculated by Radon411

CDC's largest figure for McIntosh County rests on 7 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 14.3 points and no rank or comparison is drawn from it. Results reached as high as 2.1 pCi/L, with a middle value of 0.8 pCi/L.

The nearest counties with a figure are Chatham County (39 miles away) at 0.0%, Laurens County (111 miles away) at 16.1% and Richmond County (134 miles away) at 0.0%. 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 McIntosh County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 91% of the county's land low radon potential.

Georgia, the United States and the counties around McIntosh 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
Liberty County, GAborders it120.0%1.0 pCi/L
Glynn County, GAborders it230.0%0.2 pCi/L
Wayne County, GAborders it30.0%0.5 pCi/L
The nearest Georgia counties to McIntosh County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Chatham County39 mi470.0%0.6 pCi/L
Laurens County111 mi3116.1%0.9 pCi/L
Richmond County134 mi350.0%1.3 pCi/L
Houston County148 mi618.2%1.5 pCi/L
Columbia County150 mi729.7%0.8 pCi/L
Bibb County162 mi960.0%1.0 pCi/L
Jones County164 mi3426.5%2.0 pCi/L
Dougherty County166 mi320.0%0.6 pCi/L
McIntosh County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201770.0%0.8 pCi/L2.1 pCi/L24.8%Level
2007 to 201670.0%0.8 pCi/L2.1 pCi/L23.9%Level
2006 to 201570.0%0.8 pCi/L2.1 pCi/L23.7%Level
2005 to 201470.0%0.8 pCi/L2.1 pCi/L23.2%First on file

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

McIntosh County, Geology

The ground under McIntosh County

Predicted

USGS's geologic map puts all of McIntosh County's mapped land in one class: low radon potential. 91.0% of it lies in the area the map calls Coastal Plain, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under McIntosh County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Coastal PlainQuaternary and Pleistocene-Pliocene coastal sand and gravel, lagoon and marsh clay and silt.Low791.0%

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

McIntosh County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of McIntosh County's is. None of the 4 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: McIntosh County, the 4 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
McIntosh CountyZone 391.0%NoneNone
Glynn CountyZone 385.2%NoneNone
Liberty CountyZone 397.1%NoneNone
Long CountyZone 3100%NoneNone
Wayne CountyZone 3100%NoneNone
Georgia159 counties, pooled by land areaVaries73.1%26.5%None

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

Local help

McIntosh County, Local resources

Radon testing and mitigation in McIntosh 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

McIntosh County, Questions

Questions about radon in McIntosh County

Are radon levels high in McIntosh County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for McIntosh County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.8 pCi/L. Of the 8 nearest counties with a figure, within 166 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 26.5%.

Which counties border McIntosh County?

McIntosh County borders 4 counties: Glynn County, Liberty County, Long County and Wayne County.

Products

McIntosh County, Products

Testing a home in McIntosh County

No CDC figure names McIntosh County; the nearest county with one, Chatham County (39 miles away), reported 0.0% 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 McIntosh County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for McIntosh County homes, compared

Explore

McIntosh County, Bordering counties

Counties bordering McIntosh County

Calculated by Radon411

McIntosh County, Cities and towns

Cities and towns in McIntosh County

McIntosh County is growing: the Census Bureau puts it at 11,989 residents on July 1, 2025, up 9.2% from 10,981 in 2020. That works out to 28 people per square mile of land. Darien, its one incorporated place, has 1,807 residents, 15.1% of the total. Reported testing is thin here: 7 tests over 2008 to 2017, or 0.6 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

Darien is the one incorporated place here; CDC publishes no figure by town, so it reads McIntosh County's.

Darien, McIntosh County: residents on July 1, 2025
PlaceResidentsSince 2020Share of residents
Darien1,807+23.6%15.1%

One incorporated place, 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).

McIntosh County, Homes

Homes in McIntosh County

Of McIntosh County's 6,796 homes, 57% are detached houses, against 66% across Georgia; 39% are mobile homes. Half of its homes were built before 1997, close to Georgia's 1991: 10% date from before 1960 and 43% from 2000 or later. Owners live in 80% of the occupied homes (Georgia: 65%), so for most households a test and a fix are their own to order.

Homes in McIntosh County, Georgia, 2019 to 2023
HomesMcIntosh CountyGeorgia
Housing units6,7964,483,873
Detached houses57%66%
In buildings of 5 or more3%16%
Mobile homes39%8%
Built before 196010%12%
Built since 200043%33%
Middle year built19971991
Owner-occupied80%65%

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