Minidoka County, ID radon potential

EPA's own radon map rates Minidoka County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Minidoka County ranks higher in radon potential than 47% of rated counties (the 47th percentile).

Where Minidoka County sits nationally

Minidoka County, Idaho is home to about 22,691 people across 757.227 square miles. Population density there runs about 30 people per square mile. Within its own EPA zone, Minidoka County is bigger by population than 43% of the counties that share it. Geologically, Minidoka County is grouped into EPA Region 10 alongside 141 other counties that share its rock and soil setting.

What this actually means for a house in Minidoka County

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Minidoka County's Zone 2 prediction lands in the gap between the two. A county-wide moderate average, like Minidoka County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Next steps for a home in Minidoka 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 Idaho's state radon program

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

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