Humboldt County, NV radon potential

Humboldt County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Humboldt County sits at the 45th percentile nationally for radon potential — above 45 of every 100 rated counties.

How Humboldt County compares

Humboldt County, Nevada is home to about 17,116 people across 9,640.792 square miles. That works out to roughly 2 people per square mile. Within its own EPA zone, Humboldt County is bigger by population than 35% of the counties that share it. Geologically, Humboldt County is grouped into EPA Region 9 alongside 94 other counties that share its rock and soil setting.

Zone vs. an actual test

Humboldt County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Humboldt County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

If Humboldt County 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 Nevada's state radon program

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

Where Humboldt County's figures come from

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