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 Holmes County, Florida
EPA puts Holmes County in Zone 3, its lowest radon zone, and only 7 radon tests from it are 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
Highest bordering
6.0%
Jackson County
- Jackson
- 6.0%
1 of 4 neighbours have 30+ tests, 2008 to 2017
Nearest county
6.0%
Jackson County, 36 miles
- Jackson
- 6.0%
- Florida
- 22.7%
Share at 4+ pCi/L, 67 tests, 2008 to 2017
Ground above low
None
7.1 pts below Florida
- Holmes
- 0.0%
- Florida
- 7.1%
Share of land USGS rates moderate or high potential
Tests reported
7
Too few for a share
- Holmes
- 7
- 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 Holmes 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
Holmes County, At a glance
Holmes 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 Holmes County, 2008 to 2017, laboratory
CDC holds 7 reported tests for Holmes County over the 2008 to 2017 laboratory totals, with a median of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Holmes County beside the counties around it is how this page reads it.
What these figures count
Only 7 tests were reported to CDC for Holmes 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).
Holmes County, Compared
Holmes County radon figures, compared
Calculated by Radon411CDC's largest figure for Holmes County rests on 7 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 14.3 points and no rank or comparison is drawn from it. Results reached as high as 1.1 pCi/L, with a middle value of 0.6 pCi/L.
Jackson County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L. Farther out, Okaloosa County (48 miles away) at 2.9%, Santa Rosa County (73 miles away) at 2.0% and Gadsden County (74 miles away) at 6.3% have figures too. Pooled across 62 Florida counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.7%.
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 Holmes 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.
Holmes County, Geology
The ground under Holmes County
PredictedUSGS's geologic map puts all of Holmes 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 | 99.9% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Holmes County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Holmes 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
Holmes County, Local resources
Radon testing and mitigation in Holmes 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
Holmes County, Questions
Questions about radon in Holmes County
Are radon levels high in Holmes County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Holmes County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Jackson County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.0% of its tests at or above 4 pCi/L.
Which counties border Holmes County?
Holmes County borders 4 counties: Geneva County, AL, Washington County, FL, Walton County, FL and Jackson County, FL.
Products
Holmes County, Products
Testing a home in Holmes County
No CDC figure names Holmes County; the nearest county with one, Jackson County (36 miles away), reported 6.0% 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 Holmes 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
Monitor
RM-65 rechargeable radon detector with a color screen and alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Holmes County, Bordering counties
Counties bordering Holmes County
Calculated by Radon411- Radon levels in Walton County, FLEPA zone 3
20.0%at or above 4 pCi/L
Median 1.4 pCi/L · 10 tests
- Radon levels in Jackson County, FLEPA zone 3
6.0%at or above 4 pCi/L
Median 0.7 pCi/L · 67 tests
- Radon levels in Geneva County, ALEPA zone 3
0.0%at or above 4 pCi/L
Median 1.2 pCi/L · 5 tests
- Radon levels in Washington County, FLEPA zone 3
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 2 tests
Holmes County, Cities and towns
Cities and towns in Holmes County
The Census Bureau estimates 20,119 residents in Holmes County for July 1, 2025, 528 more than in 2020 (+2.7%). That works out to 42 people per square mile of land. No town dominates: Bonifay, the largest, has 2,839 residents, 14.1% of the total. Together its 5 incorporated places hold 20.9% of those residents; the other 79.1% live outside any of them. Reported testing is thin here: 7 tests over 2008 to 2017, or 0.3 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 2.3.
From Bonifay to Noma, CDC publishes no figure by town: each reads Holmes County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Bonifay | 2,839 | +2.7% | 14.1% |
| Ponce de Leon | 521 | +3.4% | 2.6% |
| Esto | 353 | +3.5% | 1.8% |
| Westville | 274 | +3.0% | 1.4% |
| Noma | 212 | +2.4% | 1.1% |
5 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).
Holmes County, Homes
Homes in Holmes County
Of Holmes County's 8,642 homes, 58% are detached houses, against 55% across Florida; 38% are mobile homes. Half of its homes were built before 1983, close to Florida's 1988: 12% date from before 1960 and 19% from 2000 or later. 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 | Holmes County | Florida |
|---|---|---|
| Housing units | 8,642 | 10,082,356 |
| Detached houses | 58% | 55% |
| In buildings of 5 or more | 1% | 25% |
| Mobile homes | 38% | 8% |
| Built before 1960 | 12% | 10% |
| Built since 2000 | 19% | 30% |
| Middle year built | 1983 | 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.