Charlevoix County, MI Radon Zone Data

Charlevoix County, MI radon potential

EPA places Charlevoix 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. That puts Charlevoix County in the 49th percentile nationally for radon potential — higher than 49% of the counties EPA has rated.

How Charlevoix County compares

Charlevoix County, Michigan is home to about 26,105 people across 416.33 square miles. Averaged across its land area, Charlevoix County runs about 63 people per square mile. Within its own EPA zone, Charlevoix County is bigger by population than 48% of the counties that share it. Charlevoix 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

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Charlevoix County's Zone 2 prediction. Charlevoix County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Next steps for a home in Charlevoix 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 Michigan's state radon program

For Charlevoix County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Charlevoix 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 Charlevoix County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Charlevoix County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.