What EPA's radon map says about Hood River County

EPA places Hood River County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Rank it against the rest of the country and Hood River County lands in the 48th percentile for radon potential.

Hood River County by the numbers

About 23,764 people live in Hood River County, Oregon, spread over 522.194 square miles. That works out to roughly 46 people per square mile. Among counties sharing Hood River County's EPA zone, it outranks 45% of them by population. Hood River County falls in EPA Radon Region 10, one of 142 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

EPA's Zone 2 rating for Hood River County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Middle-of-the-pack doesn't mean risk-free for any one Hood River County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Hood River County

Mitigation cost doesn't depend on Hood River 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 Oregon's state radon program

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

Hood River County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.