Volusia County, FL radon potential

EPA places Volusia County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Volusia County sits at the 31st percentile nationally for radon potential — above 31 of every 100 rated counties.

How Volusia County compares

Volusia County, Florida is home to about 602,772 people across 1,101.222 square miles. That works out to roughly 547 people per square mile. Within its own EPA zone, Volusia County is bigger by population than 96% of the counties that share it. EPA's geology-based Region 4 groups Volusia County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Volusia County

Volusia County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Volusia County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Volusia County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Florida's state radon program

For Volusia County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Volusia County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Volusia County's figures come from

Volusia County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Volusia County carries, the zone explainer covers what it does and doesn't tell you about any one house.