Amherst County, VA: EPA's radon zone, explained

EPA's own radon map rates Amherst County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Amherst County ranks higher in radon potential than 51% of rated counties (the 51st percentile).

Amherst County by the numbers

Amherst County, Virginia is home to about 31,650 people across 473.962 square miles. That works out to roughly 67 people per square mile. By population, Amherst County is the 471st largest of every county sharing its EPA zone — the 54th percentile by population within that zone. EPA's geology-based Region 3 groups Amherst County with 244 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Amherst 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. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Amherst County — testing is the only way to know an individual home's actual level.

Next steps for a home in Amherst County

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

Amherst County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Amherst County carries, the zone explainer covers what it does and doesn't tell you about any one house.