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Radon Levels in Colquitt County, Georgia

EPA puts Colquitt County in Zone 3, its lowest radon zone, and only 2 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

  • Nearest county

    0.0%

    Dougherty County, 36 miles

    Dougherty
    0.0%
    Georgia
    23.9%

    Share at 4+ pCi/L, 32 tests, 2007 to 2016

  • Ground above low

    None

    26.5 pts below Georgia

    Colquitt
    0.0%
    Georgia
    26.5%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Colquitt
    2
    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 Colquitt 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

Colquitt County, At a glance

Colquitt County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Colquitt 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 Colquitt County, 2008 to 2017, laboratory

CDC holds 2 reported tests for Colquitt County over the 2008 to 2017 laboratory totals, with a median of 0.5 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Colquitt County beside the counties around it is how this page reads it.

What these figures count

Only 2 tests were reported to CDC for Colquitt 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: 2006 to 2017 (every CDC figure on file).

How to read these figures

Colquitt County, Compared

Colquitt County radon figures, compared

Calculated by Radon411

CDC's largest figure for Colquitt County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 0.8 pCi/L, with a middle value of 0.5 pCi/L.

The nearest counties with a figure are Dougherty County (36 miles away) at 0.0%, Houston County (88 miles away) at 8.2% and Laurens County (101 miles away) at 16.1%. 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 Colquitt 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 Colquitt 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
Thomas County, GAborders it1315.4%1.7 pCi/L
Tift County, GAborders it100.0%1.4 pCi/L
Mitchell County, GAborders it10.0%1.3 pCi/L
Cook County, GAborders it10.0%3.9 pCi/L
Brooks County, GAborders it30.0%1.7 pCi/L
The nearest Georgia counties to Colquitt County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Dougherty County36 mi320.0%0.6 pCi/L
Houston County88 mi618.2%1.5 pCi/L
Laurens County101 mi3116.1%0.9 pCi/L
Bibb County112 mi960.0%1.0 pCi/L
Muscogee County112 mi952.1%0.8 pCi/L
Harris County126 mi4610.9%1.9 pCi/L
Monroe County126 mi23523.8%1.8 pCi/L
Jones County127 mi3426.5%2.0 pCi/L
Colquitt County ten-year laboratory totals, against Georgia's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestGeorgia, pooledChange from the row before
2008 to 201720.0%0.5 pCi/L0.8 pCi/L24.8%Level
2007 to 201620.0%0.5 pCi/L0.8 pCi/L23.9%Level
2006 to 201520.0%0.5 pCi/L0.8 pCi/L23.7%First on file

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

Colquitt County, Geology

The ground under Colquitt County

Predicted

USGS's geologic map puts all of Colquitt 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 Colquitt 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.

Colquitt County beside the ground around it

Across Georgia 26.5% of the land is rated moderate; none of Colquitt County's is. None of the 6 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Colquitt County, the 6 counties bordering it and Georgia
AreaEPA zoneLow potentialModerate potentialHigh potential
Colquitt CountyZone 3100%NoneNone
Cook CountyZone 3100%NoneNone
Tift CountyZone 3100%NoneNone
Mitchell CountyZone 3100%NoneNone
Brooks CountyZone 3100%NoneNone
Worth CountyZone 3100%NoneNone
Thomas 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

Colquitt County, Questions

Questions about radon in Colquitt County

Are radon levels high in Colquitt County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Colquitt County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.5 pCi/L. Of the 8 nearest counties with a figure, within 127 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 26.5%.

Which counties border Colquitt County?

Colquitt County borders 6 counties: Cook County, Tift County, Mitchell County, Brooks County, Worth County and Thomas County.

Products

Colquitt County, Products

Testing a home in Colquitt County

No CDC figure names Colquitt County; the nearest county with one, Dougherty County (36 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 Colquitt County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Colquitt County homes, compared

Explore

Colquitt County, Bordering counties

Counties bordering Colquitt County

Calculated by Radon411

Colquitt County, Cities and towns

Cities and towns in Colquitt County

The Census Bureau estimates 47,438 residents in Colquitt County for July 1, 2025, 1,530 more than in 2020 (+3.3%). That works out to 87 people per square mile of land. Its largest town, Moultrie, has 14,973 residents, 31.6% of the total. Reported testing is thin here: 2 tests over 2008 to 2017, or under 0.1 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.

From Moultrie to Ellenton, CDC publishes no figure by town: each reads Colquitt County's.

The cities and towns in Colquitt County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Moultrie14,973+2.3%31.6%
Omegaextends beyond Colquitt County1,341+1.7%Counted whole
Norman Park1,007+4.1%2.1%
Doerun737−0.1%1.6%
Berlin529+3.9%1.1%
Funston427+4.4%0.9%
Ellenton220+4.3%0.5%

7 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 Colquitt County is counted whole, so it has no share.

Colquitt County, Homes

Homes in Colquitt County

Of Colquitt County's 19,288 homes, 59% are detached houses, against 66% across Georgia; 26% are mobile homes. Half of its homes were built before 1987, close to Georgia's 1991: 18% date from before 1960 and 24% from 2000 or later. 63% 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 Colquitt County, Georgia, 2019 to 2023
HomesColquitt CountyGeorgia
Housing units19,2884,483,873
Detached houses59%66%
In buildings of 5 or more5%16%
Mobile homes26%8%
Built before 196018%12%
Built since 200024%33%
Middle year built19871991
Owner-occupied63%65%

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