Scott County, MS: EPA's radon zone, explained

Scott County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally, Scott County ranks higher in radon potential than 17% of rated counties (the 17th percentile).

How Scott County compares

Scott County, Mississippi is home to about 27,666 people across 609.231 square miles. Averaged across its land area, Scott County runs about 45 people per square mile. By population, Scott County is the 509th largest of every county sharing its EPA zone — the 51st percentile by population within that zone. EPA's geology-based Region 4 groups Scott County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Scott County

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Scott County's Zone 3 prediction is the low end of the scale. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Scott County testing above the action level often enough that skipping a test isn't the safe assumption.

If Scott County tests above the action level

For a Scott 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 Mississippi's state radon program

For Scott County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Scott 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 Scott 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 Scott County carries, the zone explainer covers what it does and doesn't tell you about any one house.