Alcorn County, MS radon potential

EPA's own radon map rates Alcorn 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 Alcorn County lands in the 52nd percentile for radon potential.

How Alcorn County compares

Alcorn County, Mississippi is home to about 34,228 people across 400.047 square miles. Population density there runs about 86 people per square mile. Within its own EPA zone, Alcorn County is bigger by population than 57% of the counties that share it. EPA's geology-based Region 4 groups Alcorn County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Alcorn 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). Nothing about a Zone 2 label lowers the case for testing in Alcorn County — EPA recommends it in every zone, moderate included.

If Alcorn County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Mississippi's state radon program

For Alcorn County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Alcorn 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 Alcorn 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.