Lincoln County, TN radon potential

Lincoln County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Lincoln County ranks higher in radon potential than 87% of rated counties (the 87th percentile).

Where Lincoln County sits nationally

Lincoln County, Tennessee is home to about 36,751 people across 570.342 square miles. Population density there runs about 64 people per square mile. Within its own EPA zone, Lincoln County is bigger by population than 62% of the counties that share it. Lincoln County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Lincoln County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. That doesn't mean every Lincoln County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

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

Where Lincoln County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Lincoln County's numbers. Whatever zone Lincoln County carries, the zone explainer covers what it does and doesn't tell you about any one house.