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

EPA's own radon map rates Elmore County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Elmore County sits at the 59th percentile nationally for radon potential — above 59 of every 100 rated counties.

How Elmore County compares

Elmore County, Alabama is home to about 91,042 people across 618.52 square miles. That works out to roughly 147 people per square mile. By population, Elmore County is the 219th largest of every county sharing its EPA zone — the 79th percentile by population within that zone. Elmore County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Elmore County

Elmore 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. Elmore 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 Elmore County tests above the action level

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

The methodology guide shows exactly which EPA and Census sources feed Elmore County's numbers. Whatever zone Elmore County carries, the zone explainer covers what it does and doesn't tell you about any one house.