Sunflower County, MS Radon Zone Data

Sunflower County, MS radon potential

EPA places Sunflower 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. Sunflower County sits at the 15th percentile nationally for radon potential — above 15 of every 100 rated counties.

How Sunflower County compares

Sunflower County, Mississippi is home to about 23,029 people across 697.759 square miles. Averaged across its land area, Sunflower County runs about 33 people per square mile. Within its own EPA zone, Sunflower County is bigger by population than 46% of the counties that share it. Sunflower 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 Sunflower County

Sunflower 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. Don't read Zone 3 as a pass for Sunflower County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Sunflower 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 Sunflower County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Sunflower County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

Where Sunflower County's figures come from

Sunflower County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Sunflower County carries, the zone explainer covers what it does and doesn't tell you about any one house.