Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Gulf County, Florida
EPA puts Gulf County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
8.9%
Wakulla County, 52 miles
- Wakulla
- 8.9%
- Florida
- 22.7%
Share at 4+ pCi/L, 79 tests, 2008 to 2017
Ground above low
None
7.1 pts below Florida
- Gulf
- 0.0%
- Florida
- 7.1%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
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 Gulf 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
Gulf County, At a glance
Gulf 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
No CDC test figures here
CDC has published no radon test figures for Gulf County. Wakulla County, 52 miles away, is the nearest county with a figure over the 2008 to 2017 laboratory totals.
Gulf County, Compared
Gulf County radon figures, compared
Calculated by Radon411No CDC figure names Gulf County, in any year or ten-year total; over the 2008 to 2017 laboratory totals, the agency's counts reach 62 Florida counties without it. Pooled across 62 Florida counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.
The nearest counties with a figure are Wakulla County (52 miles away) at 8.9%, Gadsden County (56 miles away) at 6.3% and Jackson County (58 miles away) at 6.0%. Statewide for the same period, Marion County reported the highest share (42.9%) and St. Lucie County the lowest (0.0%).
EPA's 1993 map puts Gulf 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.
Gulf County, Geology
The ground under Gulf County
PredictedUSGS's geologic map puts all of Gulf County's mapped land in one class: low radon potential. All of it lies in the area the map calls Gulf/Atlantic Lowland and Central 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 |
|---|---|---|---|---|
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 99.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gulf County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Gulf County's is. None of the 4 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Gulf County, Local resources
Radon testing and mitigation in Gulf 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
Gulf County, Questions
Questions about radon in Gulf County
Are radon levels high in Gulf County?
No CDC testing statistics are published here for Gulf County, Florida yet. Of the 8 nearest counties with a figure, within 137 miles, the share of tests at or above 4 pCi/L runs from 1.5% to 23.3%.
Which counties border Gulf County?
Gulf County borders 4 counties: Franklin County, Calhoun County, Liberty County and Bay County.
Products
Gulf County, Products
Testing a home in Gulf County
No CDC figure names Gulf County; the nearest county with one, Wakulla County (52 miles away), reported 8.9% of its tests at or above 4 pCi/L over the 2008 to 2017 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 Gulf 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
MonitorAranet
Radon Plus battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Approved
- Battery
- Bluetooth
- Alarm
- Screen, app
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Gulf County, Bordering counties
Counties bordering Gulf County
Calculated by Radon411- Radon levels in Bay CountyEPA zone 3
12.5%at or above 4 pCi/L
Median 0.9 pCi/L · 16 tests
- Radon levels in Franklin CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 3 tests
- Radon levels in Calhoun CountyEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
- Radon levels in Liberty CountyEPA zone 3
No CDC figure for 2008 to 2017; its page reads it against its own neighbours.
Gulf County, Cities and towns
Cities and towns in Gulf County
Gulf County is growing: the Census Bureau puts it at 15,943 residents on July 1, 2025, up 11.7% from 14,270 in 2020. That works out to 29 people per square mile of land. Its largest town, Port St. Joe, has 3,995 residents, 25.1% of the total. Together its 2 incorporated places hold 38.9% of those residents; the other 61.1% live outside any of them. CDC publishes no radon test count for Gulf County; across Florida its counts for 2008 to 2017 come to 2.3 tests for every 1,000 residents (2025 estimate).
From Port St. Joe to Wewahitchka, CDC publishes no figure by town: each reads Gulf County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Port St. Joe | 3,995 | +19.0% | 25.1% |
| Wewahitchka | 2,213 | +6.2% | 13.9% |
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).
Gulf County, Homes
Homes in Gulf County
Of Gulf County's 9,142 homes, 67% are detached houses, against 55% across Florida; 20% are mobile homes. Much of Gulf County is recent building: 44% of its homes have gone up since 2000 and the middle year built is 1996, against 1988 for Florida. Owners live in 80% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Gulf County | Florida |
|---|---|---|
| Housing units | 9,142 | 10,082,356 |
| Detached houses | 67% | 55% |
| In buildings of 5 or more | 5% | 25% |
| Mobile homes | 20% | 8% |
| Built before 1960 | 9% | 10% |
| Built since 2000 | 44% | 30% |
| Middle year built | 1996 | 1988 |
| Owner-occupied | 80% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.