Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Cook County, Georgia
EPA puts Cook County in Zone 3, its lowest radon zone, and only 1 radon test from it is 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, 53 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
- Cook
- 0.0%
- Georgia
- 26.5%
Share of land USGS rates moderate or high potential
Tests reported
1
Too few for a share
- Cook
- 1
- Needed
- 30
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Cook County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Cook County, At a glance
Cook County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
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 Cook County, 2008 to 2017, laboratory
CDC holds 1 reported test for Cook County over the 2008 to 2017 laboratory totals, a result of 3.9 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Cook County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Cook 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).
Cook County, Compared
Cook County radon figures, compared
Calculated by Radon411CDC's largest figure for Cook County rests on 1 test over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 100.0 points and no rank or comparison is drawn from it. Results reached as high as 3.9 pCi/L, with a middle value of 3.9 pCi/L.
The nearest counties with a figure are Dougherty County (53 miles away) at 0.0%, Houston County (91 miles away) at 8.2% and Laurens County (95 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 Cook 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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Cook County, Geology
The ground under Cook County
PredictedUSGS's geologic map puts all of Cook 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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Coastal Plain | Cretaceous and Tertiary marine and coastal sediments including limestone, sandstone, sand, silt, and clay. Coastal plan sands containing glauconite may generate locally elevated radon. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Cook County beside the ground around it
Across Georgia 26.5% of the land is rated moderate; none of Cook County's is. None of the 5 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Cook County, Local resources
Radon testing and mitigation in Cook County
- Georgia's radon programGeorgia Attorney General's Consumer Protection DivisionGeorgia's radon program does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Georgia.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
A kit costs $15.00 if mailed or $10.00 if picked up at a participating County Extension office.
- Compare kits
- Professionals in Georgia3 professionals are listed in Georgia.
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
Cook County, Questions
Questions about radon in Cook County
Are radon levels high in Cook County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Cook County, Georgia were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.9 pCi/L. Of the 8 nearest counties with a figure, within 139 miles, the share of tests at or above 4 pCi/L runs from 0.0% to 26.5%.
Which counties border Cook County?
Cook County borders 5 counties: Berrien County, Tift County, Colquitt County, Brooks County and Lowndes County.
Products
Cook County, Products
Testing a home in Cook County
No CDC figure names Cook County; the nearest county with one, Dougherty County (53 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 Cook County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
RM-63Pro rechargeable radon monitor with a touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Cook County, Bordering counties
Counties bordering Cook County
Calculated by Radon411- Radon levels in Berrien CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 1 test
- Radon levels in Tift CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 10 tests
- Radon levels in Colquitt CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 2 tests
- Radon levels in Brooks CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.7 pCi/L · 3 tests
- Radon levels in Lowndes CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.2 pCi/L · 17 tests
Cook County, Cities and towns
Cities and towns in Cook County
Cook County is growing: the Census Bureau puts it at 18,232 residents on July 1, 2025, up 5.8% from 17,238 in 2020. That works out to 80 people per square mile of land. Its largest town, Adel, has 5,854 residents, 32.1% of the total. Together its 4 incorporated places hold 49.3% of those residents; the other 50.7% live outside any of them. Reported testing is thin here: 1 test over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Georgia as a whole comes to 2.7.
From Adel to Cecil, CDC publishes no figure by town: each reads Cook County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Adel | 5,854 | +5.3% | 32.1% |
| Sparks | 2,098 | +1.6% | 11.5% |
| Lenox | 752 | +0.1% | 4.1% |
| Cecil | 293 | +1.4% | 1.6% |
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).
Cook County, Homes
Homes in Cook County
Of Cook County's 7,399 homes, 62% are detached houses, against 66% across Georgia; 30% are mobile homes. Half of its homes were built before 1984, close to Georgia's 1991: 16% date from before 1960 and 22% 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 | Cook County | Georgia |
|---|---|---|
| Housing units | 7,399 | 4,483,873 |
| Detached houses | 62% | 66% |
| In buildings of 5 or more | 5% | 16% |
| Mobile homes | 30% | 8% |
| Built before 1960 | 16% | 12% |
| Built since 2000 | 22% | 33% |
| Middle year built | 1984 | 1991 |
| Owner-occupied | 64% | 65% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.