Luce County, MI: EPA's radon zone, explained

EPA's own radon map rates Luce County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Luce County ranks higher in radon potential than 4% of rated counties (the 4th percentile).

Luce County by the numbers

Luce County, Michigan is home to about 6,328 people across 899.075 square miles. Averaged across its land area, Luce County runs about 7 people per square mile. By population, Luce County is the 917th largest of every county sharing its EPA zone — the 11th percentile by population within that zone. Luce County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

At Zone 3, Luce County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. Don't read Zone 3 as a pass for Luce County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Luce County

For a Luce County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Michigan's state radon program

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.