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Radon Levels in Suwannee County, Florida

EPA puts Suwannee County in Zone 3, its lowest radon zone, and only 3 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    6.7%

    Columbia County

    Columbia
    6.7%

    1 of 5 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    6.7%

    Columbia County, 22 miles

    Columbia
    6.7%
    Florida
    22.7%

    Share at 4+ pCi/L, 30 tests, 2008 to 2017

  • Ground above low

    None

    7.1 pts below Florida

    Suwannee
    0.0%
    Florida
    7.1%

    Share of land USGS rates moderate or high potential

  • Tests reported

    21

    Too few for a share

    Suwannee
    21
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Suwannee County

Starts at EPA's action level

4.0pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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

Suwannee County, At a glance

Suwannee County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Suwannee County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

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 Suwannee County, 2022

Share of reported tests at or above 4 pCi/L, by year, Suwannee County
Share of reported tests at or above 4 pCi/L, by year, Suwannee County
YearShare of reported tests at or above 4 pCi/L
20160.0%
20180.0%
20210.0%
20220.0%

2022: 0.0%. Across these years the share ran from 0.0% to 0.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 3 tests were reported to CDC for Suwannee County over 2022, 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: 2022. Measured data period: 2005 to 2022 (every CDC figure on file).

How to read these figures

Suwannee County, Compared

Suwannee County radon figures, compared

Calculated by Radon411

CDC's largest figure for Suwannee County rests on 21 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 4.8 points and no rank or comparison is drawn from it. Results reached as high as 2.9 pCi/L, with a middle value of 1.1 pCi/L.

Columbia County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.7% of its tests at or above 4 pCi/L. Farther out, Alachua County (52 miles away) at 35.2%, Jefferson County (57 miles away) at 6.1% and Nassau County (77 miles away) at 2.0% 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 Suwannee 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.

Florida, the United States and the counties around Suwannee County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Florida, pooled62 counties, pooled53,79422.7%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Marion Countyhighest in the state90342.9%3.3 pCi/L
St. Lucie Countylowest in the state460.0%0.1 pCi/L
Madison County, FLborders it812.5%0.6 pCi/L
Columbia County, FLborders it306.7%1.0 pCi/L
Gilchrist County, FLborders it100.0%0.7 pCi/L
The nearest Florida counties to Suwannee County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Columbia County22 mi306.7%1.0 pCi/L
Alachua County52 mi2,16235.2%2.9 pCi/L
Jefferson County57 mi496.1%1.4 pCi/L
Nassau County77 mi502.0%0.7 pCi/L
Leon County79 mi5,14823.3%2.2 pCi/L
Duval County80 mi4801.3%0.5 pCi/L
Wakulla County84 mi798.9%1.5 pCi/L
Putnam County85 mi951.1%0.1 pCi/L
Suwannee County radon tests by year, against Florida's pooled share
YearTestsAt or above 4 pCi/LMedianHighestFlorida, pooledChange from the row before
202230.0%1.2 pCi/L1.2 pCi/L22.8%Level
202120.0%0.8 pCi/L1.2 pCi/L15.4%Level
201810.0%0.6 pCi/L0.6 pCi/L23.5%Level
201610.0%0.5 pCi/L0.5 pCi/L24.3%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Suwannee County, Geology

The ground under Suwannee County

Predicted

USGS's geologic map puts all of Suwannee County's mapped land in one class: low radon potential. 99.2% 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).

USGS's geologic areas under Suwannee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Gulf/Atlantic Lowland and Central Highlandsand, silt, clay, gravelLow699.2%
Northern HighlandSand, silt, clay, gravelLow60.8%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Suwannee County beside the ground around it

Across Florida 7.1% of the land is rated moderate; none of Suwannee County's is. Of the 5 counties that border it, 2 have more moderate-potential ground, Columbia County the most at 22.7%.

Share of land by USGS radon potential: Suwannee County, the 5 counties bordering it and Florida
AreaEPA zoneLow potentialModerate potentialHigh potential
Suwannee CountyZone 3100%NoneNone
Lafayette CountyZone 3100%NoneNone
Hamilton CountyZone 3100%NoneNone
Columbia CountyZone 277.3%22.7%None
Gilchrist CountyZone 396.2%3.8%None
Madison CountyZone 3100%NoneNone
Florida67 counties, pooled by land areaVaries89.7%7.1%None

The map rates the ground, not the air in any home.

What it means

Suwannee County, Questions

Questions about radon in Suwannee County

Are radon levels high in Suwannee County?

In 2022, 0.0% of the radon tests reported to CDC for Suwannee County, Florida were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Columbia County, the one bordering county with a figure over the 2008 to 2017 laboratory totals, reported 6.7% of its tests at or above 4 pCi/L.

Which counties border Suwannee County?

Suwannee County borders 5 counties: Lafayette County, Hamilton County, Columbia County, Gilchrist County and Madison County.

Products

Suwannee County, Products

Testing a home in Suwannee County

No CDC figure names Suwannee County; the nearest county with one, Columbia County (22 miles away), reported 6.7% 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 Suwannee County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Suwannee County homes, compared

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Suwannee County, Bordering counties

Counties bordering Suwannee County

Calculated by Radon411

Suwannee County, Cities and towns

Cities and towns in Suwannee County

Suwannee County is growing: the Census Bureau puts it at 48,149 residents on July 1, 2025, up 10.6% from 43,518 in 2020. That works out to 70 people per square mile of land. No town dominates: Live Oak, the largest, has 7,248 residents, 15.1% of the total. Together its 2 incorporated places hold 16.7% of those residents; the other 83.3% live outside any of them. Reported testing is thin here: 21 tests over 2008 to 2017, or 0.4 for every 1,000 residents (2025 estimate), where Florida as a whole comes to 2.3.

From Live Oak to Branford, CDC publishes no figure by town: each reads Suwannee County's.

The cities and towns in Suwannee County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Live Oak7,248+7.4%15.1%
Branford780+9.1%1.6%

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).

Suwannee County, Homes

Homes in Suwannee County

Mobile homes are 50% of Suwannee County's 19,063 homes and detached houses 45%, against 55% across Florida. Half of its homes were built before 1991, close to Florida's 1988: 11% date from before 1960 and 26% from 2000 or later. 75% 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 in Suwannee County, Florida, 2019 to 2023
HomesSuwannee CountyFlorida
Housing units19,06310,082,356
Detached houses45%55%
In buildings of 5 or more4%25%
Mobile homes50%8%
Built before 196011%10%
Built since 200026%30%
Middle year built19911988
Owner-occupied75%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.