What EPA's radon map says about Kanabec County

Kanabec County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Kanabec County ranks higher in radon potential than 80% of rated counties (the 80th percentile).

Where Kanabec County sits nationally

About 16,608 people live in Kanabec County, Minnesota, spread over 521.616 square miles. That works out to roughly 32 people per square mile. Among counties sharing Kanabec County's EPA zone, it outranks 41% of them by population. EPA's geology-based Region 5 groups Kanabec County with 523 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Kanabec County

Where the national indoor average runs about 1.3 pCi/L, Kanabec County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. Being in Zone 1 raises the odds Kanabec County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

Next steps for a home in Kanabec County

Mitigation cost doesn't depend on Kanabec County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Minnesota's state radon program

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

More on how this number was built

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