Yukon-Koyukuk Census Area, AK radon potential

EPA's own radon map rates Yukon-Koyukuk Census Area zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Yukon-Koyukuk Census Area sits at the 3rd percentile nationally for radon potential — above 3 of every 100 rated counties.

Where Yukon-Koyukuk Census Area sits nationally

Yukon-Koyukuk Census Area, Alaska is home to about 5,099 people across 145,767.488 square miles. That works out to roughly 0 people per square mile. Within its own EPA zone, Yukon-Koyukuk Census Area is bigger by population than 9% of the counties that share it. Geologically, Yukon-Koyukuk Census Area is grouped into EPA Region 10 alongside 141 other counties that share its rock and soil setting.

Zone vs. an actual test

Yukon-Koyukuk Census Area's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. A Zone 3 rating means Yukon-Koyukuk Census Area's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

If Yukon-Koyukuk Census Area tests above the action level

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 Alaska's state radon program

For Yukon-Koyukuk Census Area, an ongoing number beats a one-time test - a Airthings radon monitor tracks Yukon-Koyukuk Census Area'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 Yukon-Koyukuk Census Area's figures come from

The methodology guide shows exactly which EPA and Census sources feed Yukon-Koyukuk Census Area's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.