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

Pittsylvania County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Rank it against the rest of the country and Pittsylvania County lands in the 91st percentile for radon potential.

Where Pittsylvania County sits nationally

Pittsylvania County, Virginia is home to about 59,410 people across 969.003 square miles. Population density there runs about 61 people per square mile. By population, Pittsylvania County is the 278th largest of every county sharing its EPA zone — the 74th percentile by population within that zone. Pittsylvania County falls in EPA Radon Region 3, one of 245 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Pittsylvania County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Pittsylvania County specifically.

Next steps for a home in Pittsylvania County

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

Where Pittsylvania County'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. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.