Montmorency County, MI Radon Zone Data

Montmorency County, MI radon potential

Montmorency County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Montmorency County ranks higher in radon potential than 40% of rated counties (the 40th percentile).

How Montmorency County compares

Montmorency County, Michigan is home to about 9,828 people across 546.675 square miles. Averaged across its land area, Montmorency County runs about 18 people per square mile. Within its own EPA zone, Montmorency County is bigger by population than 20% of the counties that share it. Montmorency 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 Montmorency County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Montmorency County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Montmorency 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 Montmorency County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Montmorency County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Montmorency County's figures come from

Montmorency County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.