Redwood County, MN radon potential

Redwood County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Rank it against the rest of the country and Redwood County lands in the 79th percentile for radon potential.

How Redwood County compares

Redwood County, Minnesota is home to about 15,254 people across 878.573 square miles. Averaged across its land area, Redwood County runs about 17 people per square mile. Within its own EPA zone, Redwood County is bigger by population than 39% of the counties that share it. Redwood County falls in EPA Radon Region 5, one of 524 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Redwood County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Redwood County specifically.

Next steps for a home in Redwood 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 Minnesota's state radon program

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

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