Trimble County, KY radon potential

Trimble County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Nationally that's the 39th percentile for radon potential — Trimble County outranks 39% of every county EPA has rated.

Trimble County by the numbers

Trimble County, Kentucky is home to about 8,591 people across 147.771 square miles. Population density there runs about 58 people per square mile. Within its own EPA zone, Trimble County is bigger by population than 18% of the counties that share it. Geologically, Trimble County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Trimble County's Zone 2 prediction. Trimble County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

If Trimble 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 Kentucky's state radon program

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

Where Trimble County's figures come from

Trimble County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Trimble County carries, the zone explainer covers what it does and doesn't tell you about any one house.