Cocke County, TN radon potential

EPA's own radon map rates Cocke County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally that's the 53rd percentile for radon potential — Cocke County outranks 53% of every county EPA has rated.

Cocke County by the numbers

Cocke County, Tennessee is home to about 37,596 people across 436.138 square miles. Averaged across its land area, Cocke County runs about 86 people per square mile. Within its own EPA zone, Cocke County is bigger by population than 60% of the counties that share it. EPA's geology-based Region 4 groups Cocke County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Cocke County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A county-wide moderate average, like Cocke County's, can still hide a specific house well above or below it — testing is what actually answers the question.

If Cocke County tests above the action level

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 Tennessee's state radon program

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

Where Cocke County's figures come from

Cocke County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.