Kittson County, MN: EPA's radon zone, explained

Kittson County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Kittson County ranks higher in radon potential than 70% of rated counties (the 70th percentile).

Kittson County by the numbers

Kittson County, Minnesota is home to about 3,992 people across 1,099 square miles. That works out to roughly 4 people per square mile. By population, Kittson County is the 953rd largest of every county sharing its EPA zone — the 11th percentile by population within that zone. EPA's geology-based Region 5 groups Kittson County with 523 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Kittson County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. Some Kittson County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Testing and mitigation in Kittson County

For a Kittson 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 Minnesota's state radon program

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

Where Kittson County's figures come from

Kittson County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.