Is Haines Borough, AK a radon risk area?

EPA places Haines Borough in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 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 Haines Borough lands in the 1st percentile for radon potential.

How Haines Borough compares

About 2,104 people live in Haines Borough, Alaska, spread over 2,334.933 square miles. That works out to roughly 1 people per square mile. Rank 993 by population within its EPA zone puts Haines Borough at the 4th percentile among zone peers. Geologically, Haines Borough is grouped into EPA Region 10 alongside 141 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Haines Borough's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Haines Borough testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Haines Borough

Nothing about Haines Borough'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 Alaska's state radon program

Haines Borough's test kit answers today; a Airthings radon monitor keeps answering for Haines Borough 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

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