Boone County, MO radon potential

Boone 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. That puts Boone County in the 62nd percentile nationally for radon potential — higher than 62% of the counties EPA has rated.

How Boone County compares

Boone County, Missouri is home to about 192,154 people across 685.556 square miles. That works out to roughly 280 people per square mile. Within its own EPA zone, Boone County is bigger by population than 88% of the counties that share it. Boone County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

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. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Boone County — testing is the only way to know an individual home's actual level.

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 Missouri'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

The methodology guide shows exactly which EPA and Census sources feed Boone County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.