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 Walton County, Florida
EPA puts Walton County in Zone 3, its lowest radon zone, and only 8 radon tests from it are on file with CDC (2021). 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%
23.2 pts below FL
- Walton
- 0.0%
- Florida
- 23.2%
82 tests, 2020
Median result
0.3pCi/L
Below action level
- Walton
- 0.3 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2020
Tests reported
82
21st of 27 by tests
- Walton
- 82
- Collier
- 3,004
Reported to CDC before any fix, 2020
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 27
Lowest quarter
- Walton
- 0.0%
- Pasco
- 63.4%
By share, of 27 with 30+ tests
Read a result for Walton County
Starts at Walton County's median, 0.3 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.3 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. Walton County's median reported result, 2020.
The data
Walton County, At a glance
Walton County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 93% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Walton County, 2021
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2015 | 100.0% |
| 2018 | 0.0% |
| 2020 | 0.0% |
| 2021 | 0.0% |
2021: 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
Only 8 tests were reported to CDC for Walton County over 2021, 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: 2021. Measured data period: 2005 to 2021 (every CDC figure on file).
Walton County, Compared
Walton County radon figures, compared
Calculated by Radon411Only 0 of 82 radon tests reported for Walton County in 2020 reached 4 pCi/L (0.0%). The median result, 0.3 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 1.6 pCi/L.
The newest figure, in 2021, counts only 8 tests (0.0% at or above 4 pCi/L), too few to compare, so this reading uses the 82-test figure.
Across 48 Florida counties pooled together, 23.2% of tests reached that level, so Walton County runs 23.2 points below its state. Against the national pool of 25.5%, the gap is 25.5 points lower. Its place in the state: 23rd of 27 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. Bay County, the one bordering county with a figure for the same period, reported 0.0%.
Below the action level, 82 tests (100.0%) came in under 2 pCi/L, against 52.1% statewide, and 0 tests (0.0%) fell between 2 and 4, against 24.7% statewide. USGS geology rates 93% of the county's land low radon potential.
The busiest year on file was 2020, with 82 tests reported; the quietest, 2015, had 1.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Walton County, Geology
The ground under Walton County
PredictedUSGS's geologic map puts all of Walton County's mapped land in one class: low radon potential. The map puts 92.3% of Walton County in the area it calls Northern Highland and 0.7% in Gulf/Atlantic Lowland and Central Highland. USGS gives both 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 | 92.3% |
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 0.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Walton County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Walton 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
Walton County, Local resources
Radon testing and mitigation in Walton 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
Walton County, Questions
Questions about radon in Walton County
Are radon levels high in Walton County?
In 2021, 0.0% of the radon tests reported to CDC for Walton County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.3 pCi/L. Of 27 Florida counties with 30 or more tests for the same period, 22 reported a higher share; pooled, the state comes to 23.2%.
Which counties border Walton County?
Walton County borders 6 counties: Holmes County, FL, Okaloosa County, FL, Washington County, FL, Geneva County, AL, Bay County, FL and Covington County, AL.
Products
Walton County, Products
Testing a home in Walton County
In Walton County, 0.0% of 82 tests reported to CDC in 2020 reached 4 pCi/L, against 23.2% 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 Walton 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
Walton County, Bordering counties
Counties bordering Walton County
Calculated by Radon411- Radon levels in Okaloosa County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 1.7 pCi/L · 1 test · 0.0 points above Walton County
- Radon levels in Washington County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 1.0 pCi/L · 1 test · 0.0 points above Walton County
- Radon levels in Bay County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 0.3 pCi/L · 44 tests · 0.0 points above Walton County
- Radon levels in Holmes County, FLEPA zone 3
No CDC figure for 2020; its page reads it against its own neighbours.
- Radon levels in Geneva County, ALEPA zone 3
No CDC figure for 2020; its page reads it against its own neighbours.
- Radon levels in Covington County, ALEPA zone 3
No CDC figure for 2020; its page reads it against its own neighbours.
Walton County, Cities and towns
Cities and towns in Walton County
Walton County is growing: the Census Bureau puts it at 93,288 residents on July 1, 2025, up 22.9% from 75,899 in 2020. That works out to 90 people per square mile of land. No town dominates: Freeport, the largest, has 7,543 residents, 8.1% of the total. Together its 3 incorporated places hold 16.7% of those residents; the other 83.3% live outside any of them. Testing is reported here more often than across the state: CDC's 82 reported tests for 2020 come to 0.9 for every 1,000 residents (2025 estimate), against 0.5 for Florida.
From Freeport to Paxton, CDC publishes no figure by town: each reads Walton County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Freeport | 7,543 | +24.5% | 8.1% |
| DeFuniak Springs | 7,338 | +23.0% | 7.9% |
| Paxton | 695 | +24.1% | 0.7% |
3 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).
Walton County, Homes
Homes in Walton County
Of Walton County's 58,894 homes, 57% are detached houses, against 55% across Florida; 22% are in buildings of five or more homes. Much of Walton County is recent building: 51% of its homes have gone up since 2000 and the middle year built is 2000, against 1988 for Florida. Owners live in 77% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Walton County | Florida |
|---|---|---|
| Housing units | 58,894 | 10,082,356 |
| Detached houses | 57% | 55% |
| In buildings of 5 or more | 22% | 25% |
| Mobile homes | 13% | 8% |
| Built before 1960 | 4% | 10% |
| Built since 2000 | 51% | 30% |
| Middle year built | 2000 | 1988 |
| Owner-occupied | 77% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.