Gentry County, MO radon potential

Gentry 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. Gentry County sits at the 37th percentile nationally for radon potential — above 37 of every 100 rated counties.

Gentry County by the numbers

Gentry County, Missouri is home to about 6,298 people across 491.422 square miles. Averaged across its land area, Gentry County runs about 13 people per square mile. Within its own EPA zone, Gentry County is bigger by population than 11% of the counties that share it. EPA's geology-based Region 7 groups Gentry County with 411 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

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 Gentry County's Zone 2 prediction. Gentry 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 Gentry 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 Missouri's state radon program

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

Where Gentry County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.