What EPA's radon map says about Pickett County

EPA's own radon map rates Pickett County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Rank it against the rest of the country and Pickett County lands in the 36th percentile for radon potential.

Where Pickett County sits nationally

About 5,108 people live in Pickett County, Tennessee, spread over 162.97 square miles. That works out to roughly 31 people per square mile. Among counties sharing Pickett County's EPA zone, it outranks 9% of them by population. EPA's geology-based Region 4 groups Pickett County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Pickett County's Zone 2 prediction lands in the gap between the two. Middle-of-the-pack doesn't mean risk-free for any one Pickett County address — a moderate county average still leaves individual homes to test either side of it.

If Pickett County tests above the action level

Mitigation cost doesn't depend on Pickett County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Tennessee's state radon program

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

More on how this number was built

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