Hickman County, TN radon potential

Hickman County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Hickman County sits at the 84th percentile nationally for radon potential — above 84 of every 100 rated counties.

Where Hickman County sits nationally

Hickman County, Tennessee is home to about 25,859 people across 612.483 square miles. Population density there runs about 42 people per square mile. Within its own EPA zone, Hickman County is bigger by population than 52% of the counties that share it. EPA's geology-based Region 4 groups Hickman County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Hickman County

Hickman County's predicted average sits above EPA's own action level of 4 pCi/L — the concentration at which EPA recommends fixing a home — versus a national average around 1.3 pCi/L indoors and 0.4 pCi/L outdoors. That doesn't mean every Hickman 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 Hickman 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 Hickman County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Hickman County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Hickman County's figures come from

Hickman 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.