Boone County, KY radon potential

EPA's own radon map rates Boone County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Boone County sits at the 61st percentile nationally for radon potential — above 61 of every 100 rated counties.

Boone County by the numbers

Boone County, Kentucky is home to about 144,135 people across 246.273 square miles. Population density there runs about 585 people per square mile. Within its own EPA zone, Boone County is bigger by population than 85% of the counties that share it. Boone County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

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, Boone County's Zone 2 prediction lands in the gap between the two. Boone County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Testing and mitigation in Boone 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 Kentucky's state radon program

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

Where Boone County's figures come from

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