Oceana County, MI radon potential

EPA's own radon map rates Oceana County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Oceana County sits at the 16th percentile nationally for radon potential — above 16 of every 100 rated counties.

Oceana County by the numbers

Oceana County, Michigan is home to about 27,014 people across 538.106 square miles. Population density there runs about 50 people per square mile. Within its own EPA zone, Oceana County is bigger by population than 50% of the counties that share it. EPA's geology-based Region 5 groups Oceana County with 523 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

A Zone 3 county like Oceana County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Don't read Zone 3 as a pass for Oceana County — EPA's guidance to test every home makes no exception for counties predicted low.

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

Where Oceana County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Oceana County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.