Is Coffee County, TN a radon risk area?

Coffee County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally, Coffee County ranks higher in radon potential than 56% of rated counties (the 56th percentile).

Coffee County by the numbers

About 61,285 people live in Coffee County, Tennessee, spread over 428.964 square miles. That works out to roughly 143 people per square mile. Rank 303 by population within its EPA zone puts Coffee County at the 71st percentile among zone peers. Geologically, Coffee County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Zone vs. an actual test

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Coffee County's Zone 2 prediction lands in the gap between the two. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Coffee County — testing is the only way to know an individual home's actual level.

Next steps for a home in Coffee County

Nothing about Coffee County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Tennessee's state radon program

Coffee County's test kit answers today; a Airthings radon monitor keeps answering for Coffee County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

More on how this number was built

Coffee County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.