Floyd County, IN radon potential

EPA places Floyd County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Floyd County ranks higher in radon potential than 58% of rated counties (the 58th percentile).

Where Floyd County sits nationally

Floyd County, Indiana is home to about 81,931 people across 148.486 square miles. Population density there runs about 552 people per square mile. Within its own EPA zone, Floyd County is bigger by population than 77% of the counties that share it. Floyd County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Floyd County's Zone 2 prediction lands in the gap between the two. Nothing about a Zone 2 label lowers the case for testing in Floyd County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Floyd 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 Indiana's state radon program

For Floyd County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Floyd 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 Floyd 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.