Craig County, VA radon potential

EPA's own radon map rates Craig County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Craig County ranks higher in radon potential than 70% of rated counties (the 70th percentile).

Where Craig County sits nationally

Craig County, Virginia is home to about 4,829 people across 328.098 square miles. Population density there runs about 15 people per square mile. Within its own EPA zone, Craig County is bigger by population than 13% of the counties that share it. EPA's geology-based Region 3 groups Craig County with 244 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Craig County

Where the national indoor average runs about 1.3 pCi/L, Craig County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Craig County will test well under the action level, and EPA's guidance is to test regardless of zone.

Next steps for a home in Craig County

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 Virginia's state radon program

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

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