Montgomery County, MS radon potential
EPA places Montgomery County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Rank it against the rest of the country and Montgomery County lands in the 6th percentile for radon potential.
How Montgomery County compares
Montgomery County, Mississippi is home to about 9,411 people across 406.981 square miles. Population density there runs about 23 people per square mile. Within its own EPA zone, Montgomery County is bigger by population than 19% of the counties that share it. Montgomery County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.
Why the zone isn't the answer by itself
Montgomery County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. A Zone 3 label describes Montgomery County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.
Testing and mitigation in Montgomery County
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 Montgomery County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Montgomery 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 Montgomery 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. Whatever zone Montgomery County carries, the zone explainer covers what it does and doesn't tell you about any one house.