Is radon high in St. Lucie County, Florida?

Low. The model predicts a long-term basement average of 1.3 pCi/L in St. Lucie County (about 28% below the US average of 1.8 and close to the Florida average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 40 of 67 Florida counties.

Should I test for radon in St. Lucie County?

Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in St. Lucie County already range from 1.1 to 1.5 pCi/L. A short-term kit costs little and settles the question for your house.

What does EPA Radon Zone 3 mean for St. Lucie County?

Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and classifies whole counties. The 2001-2021 model agrees with the zone here. Neither replaces a test of your own home.

How much does radon mitigation cost in St. Lucie County?

A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Florida quotes vary with foundation type (slab, crawlspace, basement), home size and local labor. Get two or three bids from certified mitigators listed by your state radon program or the EPA's find-a-professional page.

Radon levels in St. Lucie County, Florida

LowEPA Zone 3

Predicted long-term basement average of 1.3 pCi/L (model estimate) across 14 ZIP codes - about 28% below the US average of 1.8, close to the Florida average of 1.3. Ranked #40 of 67 Florida counties.

Test St. Lucie County, FL once anyway - radon varies house to house

The predicted basement average here is 1.3 pCi/L, below the EPA's 2 pCi/L "consider fixing" threshold. That's good news for the area - but the EPA still recommends every home be tested, because foundation cracks, soil pockets and ventilation make one house very different from its neighbor. One inexpensive kit settles it.

Get a short-term test kit →Or track it with a continuous monitor

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Predicted (model estimate). The pCi/L figures on this page are long-term area averages from a peer-reviewed national model built on millions of real radon tests (2001-2021). They describe the typical home in this area - not your home, which can be several times higher or lower. The EPA radon zone is a separate, 1993 county-level classification. How the numbers work.

1.3 ± 0.07

pCi/L predicted basement mean (model SD)

0.9 ± 0.09

pCi/L predicted upstairs (above-ground) mean

1.1-1.5

range of ZIP-level basement predictions in the county

What this means for St. Lucie

The typical St. Lucie County home is predicted below 2 pCi/L, the lowest band. That is the best case an area can show - but it describes the average house, and the ZIP-level predictions within the county still span 1.1 to 1.5 pCi/L.

The 1993 EPA zone (3) and the 2001-2021 model agree for St. Lucie. County figures weight each ZIP by its 2010 Census population, so they describe where people live rather than empty land.

Comparable Florida counties: DeSoto County (1.3), Franklin County (1.3), Hardee County (1.3), Okaloosa County (1.3). The state's highest is Jefferson County at 1.6 pCi/L.

ZIP codes in St. Lucie County

Predicted basement and upstairs means by ZIP (model estimate). ZIPs whose land is mostly in this county.

ZIP	Basement	Upstairs	Grade
34953	1.4 ± 0.07	1.0	Low
34983	1.4 ± 0.07	1.0	Low
34952	1.2 ± 0.08	0.8	Low
34982	1.2 ± 0.07	0.8	Low
34986	1.5 ± 0.06	1.1	Low
34950	1.1 ± 0.08	0.7	Low
34951	1.4 ± 0.07	1.0	Low
34984	1.3 ± 0.08	1.1	Low
34947	1.1 ± 0.08	0.6	Low
34949	1.2 ± 0.08	0.8	Low
34987	1.4 ± 0.06	1.1	Low
34946	1.2 ± 0.08	0.7	Low
34945	1.4 ± 0.07	1.0	Low
34981	1.3 ± 0.07	1.0	Low

If your test comes back at 4 pCi/L or higher

Mitigation is a routine job: a fan-driven pipe that vents soil gas from under the slab to above the roofline, typically $800-$2,500 installed (typical range; local quotes vary). Use certified professionals: EPA find-a-professional. Read the full mitigation guide.

St. Lucie County radon questions

Is radon high in St. Lucie County, Florida?: Low. The model predicts a long-term basement average of 1.3 pCi/L in St. Lucie County (about 28% below the US average of 1.8 and close to the Florida average of 1.3). That is below the EPA's 2 pCi/L "consider fixing" threshold, though individual homes still vary. Ranked 40 of 67 Florida counties.
Should I test for radon in St. Lucie County?: Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in St. Lucie County already range from 1.1 to 1.5 pCi/L. A short-term kit costs little and settles the question for your house.
What does EPA Radon Zone 3 mean for St. Lucie County?: Zone 3 - low potential (< 2 pCi/L). The zone map dates from 1993 and classifies whole counties. The 2001-2021 model agrees with the zone here. Neither replaces a test of your own home.
How much does radon mitigation cost in St. Lucie County?: A standard active sub-slab depressurization system typically runs $800-$2,500 installed nationally; Florida quotes vary with foundation type (slab, crawlspace, basement), home size and local labor. Get two or three bids from certified mitigators listed by your state radon program or the EPA's find-a-professional page.

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