Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Baker County, Florida
EPA puts Baker County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 0.0% of 48 (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
0.0%
18.5 pts below FL
- Baker
- 0.0%
- Florida
- 18.5%
48 tests, 2023
Median result
1.1pCi/L
Below action level
- Baker
- 1.1 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
48
28th of 30 by tests
- Baker
- 48
- 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
23 of 30
Middle half
- Baker
- 0.0%
- Marion
- 44.5%
By share, of 30 with 30+ tests
Read a result for Baker County
Starts at Baker County's median, 1.1 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.1 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. Baker County's median reported result, 2023.
The data
Baker County, At a glance
Baker County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 94% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Baker County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2022 | 100.0% |
| 2023 | 0.0% |
2023: 0.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 48 tests reported to CDC for Baker 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).
Baker County, Compared
Baker County radon figures, compared
Calculated by Radon411Only 0 of 48 radon tests reported for Baker County in 2023 reached 4 pCi/L (0.0%). The median result, 1.1 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 2.8 pCi/L.
Across 49 Florida counties pooled together, 18.5% of tests reached that level, so Baker County runs 18.5 points below its state. Against the national pool of 33.4%, the gap is 33.4 points lower. Its place in the state: 23rd of 30 Florida counties with 30 or more tests for the same period.
Zone 3 on EPA's map (predicted average under 2 pCi/L) and a 0.0% share point the same way here. Of 3 neighbours with a figure, all 3 reported a larger share at or above 4 pCi/L; the spread is 0.0% (Clay County) to 6.2% (Duval County).
Below the action level, 40 tests (83.3%) came in under 2 pCi/L, against 57.3% statewide, and 8 tests (16.7%) fell between 2 and 4, against 24.2% statewide. USGS geology rates 94% of the county's land low radon potential.
The busiest year on file was 2023, with 48 tests reported; the quietest, 2022, had 3.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Baker County, Geology
The ground under Baker County
PredictedMost of the ground under Baker County is one class on USGS's geologic map: 94.2% of its land is low radon potential, with 5.8% moderate. The map puts 94.0% of Baker County in the area it calls Gulf/Atlantic Lowland and Central Highland and 5.8% in Highland Anomalous areas. USGS gives the first a radon index of 6, in the low band (5 to 8), and the second 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 94.0% |
| Highland Anomalous areas | Phosphate deposits. | Moderate | 11 | 5.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Baker County beside the ground around it
On moderate-potential ground Baker County is close to Florida as a whole: 5.8% of its land against 7.1%. Of the 9 counties that border it, 3 have more moderate-potential ground, Union County the most at 63.8%.
The map rates the ground, not the air in any home.
Local help
Baker County, Local resources
Radon testing and mitigation in Baker 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
Baker County, Questions
Questions about radon in Baker County
Are radon levels high in Baker County?
In 2023, 0.0% of the radon tests reported to CDC for Baker County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Of 30 Florida counties with 30 or more tests for the same period, 22 reported a higher share; pooled, the state comes to 18.5%.
Which counties border Baker County?
Baker County borders 9 counties: Columbia County, FL, Union County, FL, Charlton County, GA, Nassau County, FL, Bradford County, FL, Duval County, FL, Clay County, FL, Ware County, GA and Clinch County, GA.
Products
Baker County, Products
Testing a home in Baker County
In Baker County, 0.0% of 48 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 Baker 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
MonitorAEGTEST
HOUND-3699 radon monitor with a 2.1-inch touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
First reading: Within 1 hour
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Baker County, Bordering counties
Counties bordering Baker County
Calculated by Radon411- Radon levels in Duval County, FLEPA zone 3
6.2%at or above 4 pCi/L
Median 0.4 pCi/L · 792 tests · 6.2 points above Baker County
- Radon levels in Columbia County, FLEPA zone 2
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 3 tests · 0.0 points above Baker County
- Radon levels in Nassau County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 90 tests · 0.0 points above Baker County
- Radon levels in Clay County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 36 tests · 0.0 points above Baker County
- Radon levels in Union County, FLEPA zone 2
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Charlton County, GAEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Bradford County, FLEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Ware County, GAEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Clinch County, GAEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
Baker County, Cities and towns
Cities and towns in Baker County
Baker County is growing: the Census Bureau puts it at 29,737 residents on July 1, 2025, up 5.8% from 28,114 in 2020. That works out to 51 people per square mile of land. Its largest town, Macclenny, has 8,251 residents, 27.7% of the total. Together its 2 incorporated places hold 29.5% of those residents; the other 70.5% live outside any of them. Testing is reported here more often than across the state: CDC's 48 reported tests for 2023 come to 1.6 for every 1,000 residents (2025 estimate), against 0.7 for Florida.
From Macclenny to Glen St. Mary, CDC publishes no figure by town: each reads Baker County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Macclenny | 8,251 | +12.2% | 27.7% |
| Glen St. Mary | 510 | +9.7% | 1.7% |
2 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).
Baker County, Homes
Homes in Baker County
Of Baker County's 10,013 homes, 60% are detached houses, against 55% across Florida; 34% are mobile homes. Half of its homes were built before 1994, close to Florida's 1988: 6% date from before 1960 and 39% from 2000 or later. Owners live in 83% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Baker County | Florida |
|---|---|---|
| Housing units | 10,013 | 10,082,356 |
| Detached houses | 60% | 55% |
| In buildings of 5 or more | 2% | 25% |
| Mobile homes | 34% | 8% |
| Built before 1960 | 6% | 10% |
| Built since 2000 | 39% | 30% |
| Middle year built | 1994 | 1988 |
| Owner-occupied | 83% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.