Is radon high in Duval County, Florida?

Low. The model predicts a long-term basement average of 1.2 pCi/L in Duval County (about 34% 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 61 of 67 Florida counties.

Should I test for radon in Duval County?

Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Duval County already range from 0.9 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 Duval 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 Duval 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 Duval County, Florida

LowEPA Zone 3

Predicted long-term basement average of 1.2 pCi/L (model estimate) across 32 ZIP codes - about 34% below the US average of 1.8, close to the Florida average of 1.3. Ranked #61 of 67 Florida counties.

Test Duval County, FL once anyway - radon varies house to house

The predicted basement average here is 1.2 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.

1.2 ± 0.07

pCi/L predicted basement mean (model SD)

0.6 ± 0.11

pCi/L predicted upstairs (above-ground) mean

0.9-1.5

range of ZIP-level basement predictions in the county

What this means for Duval

The typical Duval 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 0.9 to 1.5 pCi/L.

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

Comparable Florida counties: Monroe County (1.2), Okeechobee County (1.2), Broward County (1.2), Orange County (1.2). The state's highest is Jefferson County at 1.6 pCi/L.

ZIP codes in Duval County

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

ZIP	Basement	Upstairs	Grade
32210	1.1 ± 0.06	0.6	Low
32244	1.2 ± 0.07	0.7	Low
32218	1.3 ± 0.07	0.6	Low
32225	1.2 ± 0.07	0.6	Low
32246	1.2 ± 0.08	0.5	Low
32224	1.4 ± 0.06	0.7	Low
32256	1.2 ± 0.08	0.6	Low
32257	1.2 ± 0.06	0.7	Low
32216	1.2 ± 0.07	0.6	Low
32209	0.9 ± 0.07	0.6	Low
32207	1.0 ± 0.07	0.5	Low
32208	1.1 ± 0.07	0.6	Low
32211	1.0 ± 0.08	0.5	Low
32277	1.1 ± 0.07	0.6	Low
32205	1.1 ± 0.08	0.6	Low
32221	1.4 ± 0.07	0.9	Low
32258	1.4 ± 0.07	0.7	Low
32250	1.3 ± 0.06	0.8	Low
32223	1.3 ± 0.07	0.8	Low
32233	1.3 ± 0.07	0.8	Low
32217	1.2 ± 0.07	0.6	Low
32206	1.0 ± 0.07	0.6	Low
32226	1.5 ± 0.07	0.9	Low
32254	1.1 ± 0.07	0.6	Low
32220	1.4 ± 0.07	0.8	Low
32219	1.4 ± 0.07	0.8	Low
32222	1.4 ± 0.07	0.9	Low
32202	0.9 ± 0.08	0.5	Low
32266	1.2 ± 0.06	0.7	Low
32204	0.9 ± 0.08	0.5	Low
32234	1.5 ± 0.06	1.0	Low
32227	1.2 ± 0.07	0.7	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.

Duval County radon questions

Is radon high in Duval County, Florida?: Low. The model predicts a long-term basement average of 1.2 pCi/L in Duval County (about 34% 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 61 of 67 Florida counties.
Should I test for radon in Duval County?: Yes, once. The EPA recommends testing every home regardless of area, and the model's ZIP-level predictions in Duval County already range from 0.9 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 Duval 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 Duval 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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