Galax city, VA: EPA's radon zone, explained

EPA places Galax city 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 Galax city lands in the 37th percentile for radon potential.

Where Galax city sits nationally

Galax city, Virginia is home to about 6,739 people across 8.236 square miles. That works out to roughly 818 people per square mile. By population, Galax city is the 905th largest of every county sharing its EPA zone — the 12th percentile by population within that zone.

Zone vs. an actual test

EPA's Zone 2 rating for Galax city sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Nothing about a Zone 2 label lowers the case for testing in Galax city — EPA recommends it in every zone, moderate included.

If Galax city tests above the action level

For a Galax city 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 Virginia's state radon program

For Galax city, an ongoing number beats a one-time test - a Airthings radon monitor tracks Galax city'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 Galax city's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Galax city carries, the zone explainer covers what it does and doesn't tell you about any one house.