Is Wright County, MN a radon risk area?

EPA's own radon map rates Wright County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 96th percentile for radon potential — Wright County outranks 96% of every county EPA has rated.

Wright County by the numbers

About 154,593 people live in Wright County, Minnesota, spread over 661.159 square miles. That works out to roughly 234 people per square mile. Rank 134 by population within its EPA zone puts Wright County at the 88th percentile among zone peers. Geologically, Wright 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 Wright County

Wright County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. Being in Zone 1 raises the odds Wright 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 Wright County

Nothing about Wright 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 Minnesota's state radon program

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

More on how this number was built

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.