Is Saginaw County, MI a radon risk area?

EPA places Saginaw County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Saginaw County ranks higher in radon potential than 29% of rated counties (the 29th percentile).

Where Saginaw County sits nationally

About 187,714 people live in Saginaw County, Michigan, spread over 800.807 square miles. Averaged across its land area, Saginaw County runs about 234 people per square mile. Rank 137 by population within its EPA zone puts Saginaw County at the 87th percentile among zone peers. Geologically, Saginaw County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

What this actually means for a house in Saginaw County

A Zone 3 county like Saginaw County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 label describes Saginaw County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Next steps for a home in Saginaw County

Nothing about Saginaw County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Michigan's state radon program

Saginaw County's test kit answers today; a Airthings radon monitor keeps answering for Saginaw County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

More on how this number was built

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