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

EPA places Macon County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally that's the 45th percentile for radon potential — Macon County outranks 45% of every county EPA has rated.

Where Macon County sits nationally

Macon County, Alabama is home to about 18,159 people across 608.665 square miles. Averaged across its land area, Macon County runs about 30 people per square mile. By population, Macon County is the 658th largest of every county sharing its EPA zone — the 36th percentile by population within that zone. Macon County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Macon County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Macon County — testing is the only way to know an individual home's actual level.

Next steps for a home in Macon County

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

Where Macon County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Macon County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.