Dubois County, IN radon potential

EPA places Dubois 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. Dubois County sits at the 54th percentile nationally for radon potential — above 54 of every 100 rated counties.

Where Dubois County sits nationally

Dubois County, Indiana is home to about 43,629 people across 427.267 square miles. Population density there runs about 102 people per square mile. Within its own EPA zone, Dubois County is bigger by population than 63% of the counties that share it. Dubois 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

Dubois County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). A county-wide moderate average, like Dubois County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Next steps for a home in Dubois 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 Dubois County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Dubois County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Dubois County's figures come from

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