Rolette County, ND radon potential

EPA's own radon map rates Rolette County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Rank it against the rest of the country and Rolette County lands in the 77th percentile for radon potential.

How Rolette County compares

Rolette County, North Dakota is home to about 11,692 people across 903.042 square miles. Averaged across its land area, Rolette County runs about 13 people per square mile. Within its own EPA zone, Rolette County is bigger by population than 32% of the counties that share it. Geologically, Rolette County is grouped into EPA Region 8 alongside 290 other counties that share its rock and soil setting.

What this actually means for a house in Rolette County

Outdoor air nationally averages about 0.4 pCi/L, indoor air about 1.3 pCi/L — Rolette County's Zone 1 prediction clears both of those and EPA's fix-it threshold besides. That doesn't mean every Rolette County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Next steps for a home in Rolette 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 North Dakota's state radon program

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

Rolette 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.