Newton County, MS radon potential

EPA's own radon map rates Newton County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. That puts Newton County in the 14th percentile nationally for radon potential — higher than 14% of the counties EPA has rated.

How Newton County compares

Newton County, Mississippi is home to about 21,063 people across 577.771 square miles. Averaged across its land area, Newton County runs about 36 people per square mile. Within its own EPA zone, Newton County is bigger by population than 42% of the counties that share it. EPA's geology-based Region 4 groups Newton County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Newton 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 Newton County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Next steps for a home in Newton 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 Newton County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Newton 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 Newton County's figures come from

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