Okaloosa County, FL radon potential

EPA places Okaloosa 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. That puts Okaloosa County in the 29th percentile nationally for radon potential — higher than 29% of the counties EPA has rated.

Where Okaloosa County sits nationally

Okaloosa County, Florida is home to about 220,483 people across 929.833 square miles. That works out to roughly 237 people per square mile. Within its own EPA zone, Okaloosa County is bigger by population than 89% of the counties that share it. EPA's geology-based Region 4 groups Okaloosa County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Okaloosa County

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Okaloosa County's Zone 3 prediction is the low end of the scale. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Okaloosa County testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Okaloosa 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 Okaloosa County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Okaloosa 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 Okaloosa County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.