Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Gadsden County, Florida
EPA puts Gadsden County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 14.6% of 96 (2023) reached 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
14.6%
3.9 pts below FL
- Gadsden
- 14.6%
- Florida
- 18.5%
96 tests, 2023
Median result
1.3pCi/L
Below action level
- Gadsden
- 1.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
96
22nd of 30 by tests
- Gadsden
- 96
- Broward
- 2,165
Reported to CDC before any fix, 2023
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Rank in Florida
9 of 30
Middle half
- Gadsden
- 14.6%
- Marion
- 44.5%
By share, of 30 with 30+ tests
Read a result for Gadsden County
Starts at Gadsden County's median, 1.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.3 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Gadsden County's median reported result, 2023.
The data
Gadsden County, At a glance
Gadsden 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 Gadsden County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 7.1% |
| 2015 | 16.7% |
| 2016 | 6.1% |
| 2017 | 0.0% |
| 2018 | 21.4% |
| 2019 | 0.0% |
| 2020 | 8.7% |
| 2021 | 8.8% |
| 2022 | 0.0% |
| 2023 | 14.6% |
2023: 14.6%. Across these years the share ran from 0.0% to 21.4%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 96 tests reported to CDC for Gadsden County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Gadsden County, Compared
Gadsden County radon figures, compared
Calculated by Radon411Gadsden County reports fewer high tests than Florida overall. 14.6% of its 96 tests in 2023 were at or above 4 pCi/L. That is 3.9 points below the 18.5% pooled from 49 Florida counties.
Ordered from highest share down, it comes 9th of 30 Florida counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 33.4%; Gadsden County sits 18.8 points below it.
Leon County, the one bordering county with a figure for the same period, reported 19.1%. Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 14.6% share point the same way here.
Half the tests came in under 1.3 pCi/L and half over it; the single highest reached 36.3 pCi/L. The rest split 67.7% under 2 pCi/L and 17.7% from 2 to 4 (Florida: 57.3% and 24.2%). Year by year, 2016 opened at 6.1% and 2023 closed at 14.6% (up 8.5 points), with 2023 the high at 14.6%.
The busiest year on file was 2022, with 144 tests reported; the quietest, 2015, had 12.
Gadsden CountyFlorida, pooled
| Year | Tests | Gadsden County, at or above 4 pCi/L | Florida, pooled |
|---|---|---|---|
| 2016 | 49 | 6.1% | 24.3% |
| 2021 | 34 | 8.8% | 15.4% |
| 2022 | 144 | 0.0% | 22.8% |
| 2023 | 96 | 14.6% | 18.5% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Gadsden County, Geology
The ground under Gadsden County
PredictedUSGS's geologic map puts all of Gadsden County's mapped land in one class: low radon potential. All of it lies in the area the map calls Northern Highland, to which USGS gives a radon index of 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Northern Highland | Sand, silt, clay, gravel | Low | 6 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gadsden County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Gadsden County's is. None of the 6 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Gadsden County, Local resources
Radon testing and mitigation in Gadsden County
- Florida’s Radon ProgramFlorida’s Radon Program, run by Florida Department of Health, licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Florida.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Protect your family by requesting a FREE radon test kit.
- Compare kits
- Professionals in Florida77 professionals are listed in Florida.
What Florida's program says
- Phone
- 850-245-4288
- PHtoxicology@FLhealth.gov
- Licensing of radon professionals
Florida Statutes require the certification of businesses and individuals providing radon services or any other radon related activity.
What it means
Gadsden County, Questions
Questions about radon in Gadsden County
Are radon levels high in Gadsden County?
In 2023, 14.6% of the radon tests reported to CDC for Gadsden County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of 30 Florida counties with 30 or more tests for the same period, 8 reported a higher share; pooled, the state comes to 18.5%.
Which counties border Gadsden County?
Gadsden County borders 6 counties: Decatur County, GA, Liberty County, FL, Leon County, FL, Grady County, GA, Jackson County, FL and Calhoun County, FL.
Products
Gadsden County, Products
Testing a home in Gadsden County
In Gadsden County, 14.6% of 96 tests reported to CDC in 2023 reached 4 pCi/L, against 18.5% pooled across Florida. 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 Gadsden County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Gadsden County, Bordering counties
Counties bordering Gadsden County
Calculated by Radon411- Radon levels in Leon County, FLEPA zone 2
19.1%at or above 4 pCi/L
Median 1.8 pCi/L · 1,196 tests · 4.5 points above Gadsden County
- Radon levels in Jackson County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 2 tests · 14.6 points below Gadsden County
- Radon levels in Calhoun County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 3.9 pCi/L · 1 test · 14.6 points below Gadsden County
- Radon levels in Decatur County, GAEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Liberty County, FLEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Grady County, GAEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
Gadsden County, Cities and towns
Cities and towns in Gadsden County
The Census Bureau estimates 44,298 residents in Gadsden County for July 1, 2025, 871 more than in 2020 (+2.0%). That works out to 86 people per square mile of land. No town dominates: Quincy, the largest, has 8,162 residents, 18.4% of the total. Together its 6 incorporated places hold 41.0% of those residents; the other 59.0% live outside any of them. Testing is reported here more often than across the state: CDC's 96 reported tests for 2023 come to 2.2 for every 1,000 residents (2025 estimate), against 0.7 for Florida.
From Quincy to Greensboro, CDC publishes no figure by town: each reads Gadsden County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Quincy | 8,162 | +3.4% | 18.4% |
| Midway | 3,482 | −1.7% | 7.9% |
| Chattahoochee | 3,011 | +2.7% | 6.8% |
| Havana | 1,759 | +0.9% | 4.0% |
| Gretna | 1,296 | +1.3% | 2.9% |
| Greensboro | 468 | +2.2% | 1.1% |
6 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).
Gadsden County, Homes
Homes in Gadsden County
Of Gadsden County's 19,100 homes, 64% are detached houses, against 55% across Florida; 27% are mobile homes. Half of its homes were built before 1983, close to Florida's 1988: 21% date from before 1960 and 22% from 2000 or later. 73% of occupied homes are lived in by their owner (Florida: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Gadsden County | Florida |
|---|---|---|
| Housing units | 19,100 | 10,082,356 |
| Detached houses | 64% | 55% |
| In buildings of 5 or more | 4% | 25% |
| Mobile homes | 27% | 8% |
| Built before 1960 | 21% | 10% |
| Built since 2000 | 22% | 30% |
| Middle year built | 1983 | 1988 |
| Owner-occupied | 73% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.