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 Osceola County, Florida
EPA puts Osceola County in Zone 3, its lowest radon zone, and most reported tests there come back low, though 1.4% of 70 (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
1.4%
17.1 pts below FL
- Osceola
- 1.4%
- Florida
- 18.5%
70 tests, 2023
Median result
1.2pCi/L
Below action level
- Osceola
- 1.2 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
70
26th of 30 by tests
- Osceola
- 70
- 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
20 of 30
Middle half
- Osceola
- 1.4%
- Marion
- 44.5%
By share, of 30 with 30+ tests
Read a result for Osceola County
Starts at Osceola County's median, 1.2 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.2 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. Osceola County's median reported result, 2023.
The data
Osceola County, At a glance
Osceola 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 Osceola County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2015 | 2.8% |
| 2016 | 4.3% |
| 2017 | 0.0% |
| 2018 | 0.0% |
| 2019 | 2.8% |
| 2020 | 6.5% |
| 2021 | 7.4% |
| 2022 | 0.0% |
| 2023 | 1.4% |
2023: 1.4%. Across these years the share ran from 0.0% to 7.4%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 70 tests reported to CDC for Osceola 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).
Osceola County, Compared
Osceola County radon figures, compared
Calculated by Radon411Only 1 of 70 radon tests reported for Osceola County in 2023 reached 4 pCi/L (1.4%). The median result, 1.2 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 5.0 pCi/L.
Across 49 Florida counties pooled together, 18.5% of tests reached that level, so Osceola County runs 17.1 points below its state. Against the national pool of 33.4%, the gap is 32.0 points lower. Its place in the state: 20th 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 1.4% share point the same way here. Of 4 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 0.0% (Brevard County) to 11.0% (Polk County).
Below the action level, 56 tests (80.0%) came in under 2 pCi/L, against 57.3% statewide, and 13 tests (18.6%) fell between 2 and 4, against 24.2% statewide. Over 10 years of annual figures the share held within 2 points, from 0.0% in 2014 to 1.4% in 2023; its peak was 7.4% in 2021. USGS geology rates 100% of the county's land low radon potential.
The busiest year on file was 2022, with 258 tests reported; the quietest, 2016, had 46.
Osceola CountyFlorida, pooled
1.4% % of tests18.5% % of tests
| Year | Tests | Osceola County, at or above 4 pCi/L | Florida, pooled |
|---|---|---|---|
| 2014 | 56 | 0.0% | 25.7% |
| 2015 | 109 | 2.8% | 26.5% |
| 2016 | 46 | 4.3% | 24.3% |
| 2017 | 62 | 0.0% | 21.7% |
| 2018 | 57 | 0.0% | 23.5% |
| 2019 | 71 | 2.8% | 29.6% |
| 2020 | 62 | 6.5% | 23.2% |
| 2021 | 122 | 7.4% | 15.4% |
| 2022 | 258 | 0.0% | 22.8% |
| 2023 | 70 | 1.4% | 18.5% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Osceola County, Geology
The ground under Osceola County
PredictedUSGS's geologic map puts all of Osceola 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 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Osceola County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Osceola County's is. Of the 7 counties that border it, 1 has more moderate-potential ground, Polk County the most at 33.7%.
The map rates the ground, not the air in any home.
Local help
Osceola County, Local resources
Radon testing and mitigation in Osceola 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
Osceola County, Questions
Questions about radon in Osceola County
Are radon levels high in Osceola County?
In 2023, 1.4% of the radon tests reported to CDC for Osceola County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Of 30 Florida counties with 30 or more tests for the same period, 19 reported a higher share; pooled, the state comes to 18.5%.
Which counties border Osceola County?
Osceola County borders 7 counties: Brevard County, Indian River County, Polk County, Orange County, Highlands County, Okeechobee County and Lake County.
Products
Osceola County, Products
Testing a home in Osceola County
In Osceola County, 1.4% of 70 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 Osceola 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
Osceola County, Bordering counties
Counties bordering Osceola County
Calculated by Radon411- Radon levels in Polk CountyEPA zone 2
11.0%at or above 4 pCi/L
Median 1.1 pCi/L · 136 tests · 9.6 points above Osceola County
- Radon levels in Orange CountyEPA zone 3
9.5%at or above 4 pCi/L
Median 0.9 pCi/L · 1,107 tests · 8.1 points above Osceola County
- Radon levels in Indian River CountyEPA zone 3
6.7%at or above 4 pCi/L
Median 1.3 pCi/L · 15 tests · 5.3 points above Osceola County
- Radon levels in Brevard CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 205 tests · 1.4 points below Osceola County
- Radon levels in Lake CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 159 tests · 1.4 points below Osceola County
- Radon levels in Highlands CountyEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
- Radon levels in Okeechobee CountyEPA zone 3
No CDC figure for 2023; its page reads it against its own neighbours.
Osceola County, Cities and towns
Cities and towns in Osceola County
Osceola County is growing: the Census Bureau puts it at 481,718 residents on July 1, 2025, up 23.2% from 391,130 in 2020. That works out to 363 people per square mile of land. No town dominates: Kissimmee, the largest, has 85,591 residents, 17.8% of the total. Together its 2 incorporated places hold 33.3% of those residents; the other 66.7% live outside any of them. Reported testing is thin here: 70 tests over 2023, or 0.1 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 0.7.
From Kissimmee to St. Cloud, CDC publishes no figure by town: each reads Osceola County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Kissimmee | 85,591 | +8.0% | 17.8% |
| St. Cloud | 74,960 | +25.8% | 15.6% |
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).
Osceola County, Homes
Homes in Osceola County
Of Osceola County's 164,195 homes, 60% are detached houses, against 55% across Florida; 20% are in buildings of five or more homes. Much of Osceola County is recent building: 53% of its homes have gone up since 2000 and the middle year built is 2001, against 1988 for Florida. 66% 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 | Osceola County | Florida |
|---|---|---|
| Housing units | 164,195 | 10,082,356 |
| Detached houses | 60% | 55% |
| In buildings of 5 or more | 20% | 25% |
| Mobile homes | 7% | 8% |
| Built before 1960 | 3% | 10% |
| Built since 2000 | 53% | 30% |
| Middle year built | 2001 | 1988 |
| Owner-occupied | 66% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.