What EPA's radon map says about Gooding County

EPA's own radon map rates Gooding County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 80th percentile for radon potential — Gooding County outranks 80% of every county EPA has rated.

Gooding County by the numbers

About 16,189 people live in Gooding County, Idaho, spread over 729.323 square miles. Population density there runs about 22 people per square mile. Among counties sharing Gooding County's EPA zone, it outranks 40% of them by population. EPA's geology-based Region 10 groups Gooding County with 141 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Gooding County

Gooding 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. That doesn't mean every Gooding 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.

If Gooding County tests above the action level

Mitigation cost doesn't depend on Gooding County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Idaho's state radon program

Gooding County's test kit answers today; a Airthings radon monitor keeps answering for Gooding 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

Gooding County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Gooding County carries, the zone explainer covers what it does and doesn't tell you about any one house.