Cannon County, TN radon potential

EPA's own radon map rates Cannon County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally, Cannon County ranks higher in radon potential than 43% of rated counties (the 43rd percentile).

Cannon County by the numbers

Cannon County, Tennessee is home to about 15,142 people across 265.635 square miles. That works out to roughly 57 people per square mile. Within its own EPA zone, Cannon County is bigger by population than 31% of the counties that share it. EPA's geology-based Region 4 groups Cannon County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Cannon County

EPA's Zone 2 rating for Cannon County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Cannon County — testing is the only way to know an individual home's actual level.

Next steps for a home in Cannon 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 Tennessee's state radon program

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

Where Cannon County's figures come from

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