Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Indian River County, Florida
EPA puts Indian River County in Zone 3, its lowest radon zone, and only 15 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
1.9%
21.0 pts below FL
- Indian River
- 1.9%
- Florida
- 22.9%
160 tests, 2006 to 2015
Median result
0.6pCi/L
Below action level
- Indian River
- 0.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2006 to 2015
Tests reported
160
22nd of 37 by tests
- Indian River
- 160
- Collier
- 14,716
Reported to CDC before any fix, 2006 to 2015
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
31 of 37
Lowest quarter
- Indian River
- 1.9%
- Marion
- 41.0%
By share, of 37 with 30+ tests
Read a result for Indian River County
Starts at Indian River County's median, 0.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 0.6 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. Indian River County's median reported result, 2006 to 2015.
The data
Indian River County, At a glance
Indian River 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 Indian River County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 25.0% |
| 2018 | 0.0% |
| 2019 | 0.0% |
| 2020 | 1.0% |
| 2021 | 0.0% |
| 2022 | 13.8% |
| 2023 | 6.7% |
2023: 6.7%. Across these years the share ran from 0.0% to 25.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 15 tests were reported to CDC for Indian River County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Indian River County, Compared
Indian River County radon figures, compared
Calculated by Radon411Only 3 of 160 radon tests reported for Indian River County over the 2006 to 2015 laboratory totals reached 4 pCi/L (1.9%). The median result, 0.6 pCi/L, sits below 2, well under EPA's 4 pCi/L action level, and the top reported result was 10.1 pCi/L.
The newest figure, in 2023, counts only 15 tests (6.7% at or above 4 pCi/L), too few to compare, so this reading uses the 160-test figure.
Across 62 Florida counties pooled together, 22.9% of tests reached that level, so Indian River County runs 21.0 points below its state. Against the national pool of 36.3%, the gap is 34.4 points lower. Its place in the state: 31st of 37 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 1.9% share point the same way here. Of 3 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 0.0% (St. Lucie County) to 2.7% (Brevard County).
Below the action level, 145 tests (90.6%) came in under 2 pCi/L, against 45.8% statewide, and 12 tests (7.5%) fell between 2 and 4, against 31.4% statewide. Over 3 years of annual figures the share rose 12.8 points, from 1.0% in 2020 to 13.8% in 2022; its peak was 13.8% in 2022. USGS geology rates 94% of the county's land low radon potential.
The busiest year on file was 2020, with 99 tests reported; the quietest, 2016, had 4.
Indian River CountyFlorida, pooled
13.8% % of tests22.8% % of tests
| Year | Tests | Indian River County, at or above 4 pCi/L | Florida, pooled |
|---|---|---|---|
| 2020 | 99 | 1.0% | 23.2% |
| 2021 | 81 | 0.0% | 15.4% |
| 2022 | 87 | 13.8% | 22.8% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Indian River County, Geology
The ground under Indian River County
PredictedUSGS's geologic map puts all of Indian River County's mapped land in one class: low radon potential. The map puts 91.9% of Indian River County in the area it calls Gulf/Atlantic Lowland and Central Highland and 2.5% in Coastal barrier islands. 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 |
|---|---|---|---|---|
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 91.9% |
| Coastal barrier islands | Sand, silt, clay, gravel | Low | 6 | 2.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Indian River County beside the ground around it
Across Florida 7.1% of the land is rated moderate; none of Indian River 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
Indian River County, Local resources
Radon testing and mitigation in Indian River 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
Indian River County, Questions
Questions about radon in Indian River County
Are radon levels high in Indian River County?
In 2023, 6.7% of the radon tests reported to CDC for Indian River County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.3 pCi/L. Of 37 Florida counties with 30 or more tests for the same period, 30 reported a higher share; pooled, the state comes to 22.9%.
Which counties border Indian River County?
Indian River County borders 4 counties: St. Lucie County, Okeechobee County, Osceola County and Brevard County.
Products
Indian River County, Products
Testing a home in Indian River County
In Indian River County, 1.9% of 160 tests reported to CDC over the 2006 to 2015 laboratory totals reached 4 pCi/L, against 22.9% 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 Indian River 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-1011S rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Indian River County, Bordering counties
Counties bordering Indian River County
Calculated by Radon411- Radon levels in Brevard CountyEPA zone 3
2.7%at or above 4 pCi/L
Median 0.7 pCi/L · 813 tests · 0.8 points above Indian River County
- Radon levels in Osceola CountyEPA zone 3
1.2%at or above 4 pCi/L
Median 0.8 pCi/L · 247 tests · 0.7 points below Indian River County
- Radon levels in St. Lucie CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 47 tests · 1.9 points below Indian River County
- Radon levels in Okeechobee CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 3 tests · 1.9 points below Indian River County
Indian River County, Cities and towns
Cities and towns in Indian River County
Indian River County is growing: the Census Bureau puts it at 172,799 residents on July 1, 2025, up 7.7% from 160,454 in 2020. That works out to 344 people per square mile of land. No town dominates: Sebastian, the largest, has 27,352 residents, 15.8% of the total. Together its 5 incorporated places hold 31.8% of those residents; the other 68.2% live outside any of them. Reported testing is thin here: 160 tests over 2006 to 2015, or 0.9 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 1.7.
From Sebastian to Orchid, CDC publishes no figure by town: each reads Indian River County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Sebastian | 27,352 | +8.9% | 15.8% |
| Vero Beach | 17,603 | +7.1% | 10.2% |
| Fellsmere | 5,025 | +4.0% | 2.9% |
| Indian River Shores | 4,467 | +5.0% | 2.6% |
| Orchid | 554 | +6.1% | 0.3% |
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).
Indian River County, Homes
Homes in Indian River County
Of Indian River County's 85,093 homes, 66% are detached houses, against 55% across Florida; 17% are in buildings of five or more homes. Half of its homes were built before 1991, close to Florida's 1988: 6% date from before 1960 and 36% from 2000 or later. Owners live in 79% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Indian River County | Florida |
|---|---|---|
| Housing units | 85,093 | 10,082,356 |
| Detached houses | 66% | 55% |
| In buildings of 5 or more | 17% | 25% |
| Mobile homes | 7% | 8% |
| Built before 1960 | 6% | 10% |
| Built since 2000 | 36% | 30% |
| Middle year built | 1991 | 1988 |
| Owner-occupied | 79% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.