Perry County, AL: EPA's radon zone, explained

EPA's own radon map rates Perry County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Rank it against the rest of the country and Perry County lands in the 38th percentile for radon potential.

How Perry County compares

Perry County, Alabama is home to about 7,719 people across 719.67 square miles. That works out to roughly 11 people per square mile. By population, Perry County is the 878th largest of every county sharing its EPA zone — the 15th percentile by population within that zone. Geologically, Perry County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

What this actually means for a house in Perry County

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Perry County's Zone 2 prediction lands in the gap between the two. Perry 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 Perry County tests above the action level

For a Perry 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 Alabama's state radon program

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

Perry County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.