Gray County, TX radon potential

Gray 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, Gray County ranks higher in radon potential than 46% of rated counties (the 46th percentile).

How Gray County compares

Gray County, Texas is home to about 20,888 people across 925.974 square miles. Averaged across its land area, Gray County runs about 23 people per square mile. Within its own EPA zone, Gray County is bigger by population than 41% of the counties that share it. Geologically, Gray County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

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, Gray County's Zone 2 prediction lands in the gap between the two. A county-wide moderate average, like Gray County's, can still hide a specific house well above or below it — testing is what actually answers the question.

Testing and mitigation in Gray 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 Texas's state radon program

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

Where Gray 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. Whatever zone Gray County carries, the zone explainer covers what it does and doesn't tell you about any one house.