Skagway Municipality, AK: EPA's radon zone, explained

EPA's own radon map rates Skagway Municipality zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally that's the 1st percentile for radon potential — Skagway Municipality outranks 1% of every county EPA has rated.

Where Skagway Municipality sits nationally

Skagway Municipality, Alaska is home to about 1,119 people across 442.928 square miles. That works out to roughly 3 people per square mile. By population, Skagway Municipality is the 1011th largest of every county sharing its EPA zone — the 2nd percentile by population within that zone. Skagway Municipality falls in EPA Radon Region 10, one of 142 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Skagway Municipality

Skagway Municipality's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Skagway Municipality testing above the action level often enough that skipping a test isn't the safe assumption.

Next steps for a home in Skagway Municipality

For a Skagway Municipality homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Alaska's state radon program

For Skagway Municipality, an ongoing number beats a one-time test - a Airthings radon monitor tracks Skagway Municipality's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Skagway Municipality's figures come from

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