Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Citrus County, Florida
EPA puts Citrus County in Zone 2, its middle radon zone, and only 3 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
9.9%
12.8 pts below FL
- Citrus
- 9.9%
- Florida
- 22.7%
162 tests, 2008 to 2017
Median result
1.6pCi/L
Below action level
- Citrus
- 1.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2008 to 2017
Tests reported
162
23rd of 40 by tests
- Citrus
- 162
- Collier
- 20,308
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Florida
16 of 40
Middle half
- Citrus
- 9.9%
- Marion
- 42.9%
By share, of 40 with 30+ tests
Read a result for Citrus County
Starts at Citrus County's median, 1.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.6 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. Citrus County's median reported result, 2008 to 2017.
The data
Citrus County, At a glance
Citrus County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Citrus County is a
USGS geologic potential: Moderate across 50% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Citrus County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 27.3% |
| 2015 | 12.5% |
| 2016 | 16.7% |
| 2017 | 40.0% |
| 2018 | 0.0% |
| 2019 | 33.3% |
| 2020 | 14.3% |
| 2021 | 0.0% |
| 2022 | 0.0% |
| 2023 | 33.3% |
2023: 33.3%. Across these years the share ran from 0.0% to 40.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 3 tests were reported to CDC for Citrus 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).
Citrus County, Compared
Citrus County radon figures, compared
Calculated by Radon411Citrus County reports fewer high tests than Florida overall. 9.9% of its 162 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 12.8 points below the 22.7% pooled from 62 Florida counties.
The newest figure, in 2023, counts only 3 tests (33.3% at or above 4 pCi/L), too few to compare, so this reading uses the 162-test figure.
Ordered from highest share down, it comes 16th of 40 Florida counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Citrus County sits 25.8 points below it.
Next door, the shares run from 1.8% in Hernando County to 42.9% in Marion County, with Hernando County below Citrus County. The reported tests do not follow EPA's Zone 2 label for Citrus County (predicted average between 2 and 4 pCi/L): 9.9% of them reached 4 pCi/L, fewer than that label suggests.
Half the tests came in under 1.6 pCi/L and half over it; the single highest reached 63.4 pCi/L. The rest split 61.1% under 2 pCi/L and 29.0% from 2 to 4 (Florida: 45.5% and 31.8%).
The busiest year on file was 2018, with 12 tests reported; the quietest, 2023, had 3.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Citrus County, Geology
The ground under Citrus County
PredictedUSGS's geologic map splits Citrus County: 50.4% of its land is moderate radon potential and 40.7% low. The map puts 50.4% of Citrus County in the area it calls Highland Anomalous areas and 40.7% in Gulf/Atlantic Lowland and Central Highland. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 6, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Highland Anomalous areas | Phosphate deposits. | Moderate | 11 | 50.4% |
| Gulf/Atlantic Lowland and Central Highland | sand, silt, clay, gravel | Low | 6 | 40.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Citrus County beside the ground around it
Citrus County has more moderate-potential ground than Florida as a whole: 50.4% of its land against 7.1%. Of the 4 counties that border it, none has as large a share of moderate-potential ground; Hernando County comes nearest at 39.1%.
The map rates the ground, not the air in any home.
Local help
Citrus County, Local resources
Radon testing and mitigation in Citrus 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
Citrus County, Questions
Questions about radon in Citrus County
Are radon levels high in Citrus County?
In 2023, 33.3% of the radon tests reported to CDC for Citrus County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.4 pCi/L. Of 40 Florida counties with 30 or more tests for the same period, 15 reported a higher share; pooled, the state comes to 22.7%.
Which counties border Citrus County?
Citrus County borders 4 counties: Hernando County, Sumter County, Levy County and Marion County.
Products
Citrus County, Products
Testing a home in Citrus County
In Citrus County, 9.9% of 162 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 22.7% pooled across Florida. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Citrus County; a long-term test tells the year-round average.
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
MonitorSafetySiren
Pro4 plug-in radon detector with a display and alarm
- C-NRPP 2024/25: Not included
- Plug-in
- Alarm
- Screen
First reading: Within 48 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Citrus County, Bordering counties
Counties bordering Citrus County
Calculated by Radon411- Radon levels in Marion CountyEPA zone 2
42.9%at or above 4 pCi/L
Median 3.3 pCi/L · 903 tests · 33.0 points above Citrus County
- Radon levels in Sumter CountyEPA zone 3
25.9%at or above 4 pCi/L
Median 1.7 pCi/L · 58 tests · 16.0 points above Citrus County
- Radon levels in Levy CountyEPA zone 3
13.0%at or above 4 pCi/L
Median 1.9 pCi/L · 23 tests · 3.1 points above Citrus County
- Radon levels in Hernando CountyEPA zone 3
1.8%at or above 4 pCi/L
Median 0.8 pCi/L · 223 tests · 8.1 points below Citrus County
Citrus County, Cities and towns
Cities and towns in Citrus County
Citrus County is growing: the Census Bureau puts it at 171,666 residents on July 1, 2025, up 11.1% from 154,563 in 2020. That works out to 295 people per square mile of land. No town dominates: Inverness, the largest, has 7,796 residents, 4.5% of the total. Together its 2 incorporated places hold 6.6% of those residents; the other 93.4% live outside any of them. Reported testing is thin here: 162 tests over 2008 to 2017, or 0.9 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 2.3.
From Inverness to Crystal River, CDC publishes no figure by town: each reads Citrus County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Inverness | 7,796 | +2.7% | 4.5% |
| Crystal River | 3,618 | +1.6% | 2.1% |
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).
Citrus County, Homes
Homes in Citrus County
Of Citrus County's 83,417 homes, 70% are detached houses, against 55% across Florida; 21% are mobile homes. Half of its homes were built before 1989, close to Florida's 1988: 3% date from before 1960 and 29% from 2000 or later. Owners live in 85% of the occupied homes (Florida: 67%), so for most households a test and a fix are their own to order.
| Homes | Citrus County | Florida |
|---|---|---|
| Housing units | 83,417 | 10,082,356 |
| Detached houses | 70% | 55% |
| In buildings of 5 or more | 3% | 25% |
| Mobile homes | 21% | 8% |
| Built before 1960 | 3% | 10% |
| Built since 2000 | 29% | 30% |
| Middle year built | 1989 | 1988 |
| Owner-occupied | 85% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.