Is Motley County, TX a radon risk area?

Motley County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally, Motley County ranks higher in radon potential than 1% of rated counties (the 1st percentile).

How Motley County compares

About 1,015 people live in Motley County, Texas, spread over 989.566 square miles. Population density there runs about 1 people per square mile. Rank 1013 by population within its EPA zone puts Motley County at the 2nd percentile among zone peers. Motley County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Motley County

At Zone 3, Motley County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. Don't read Zone 3 as a pass for Motley County — EPA's guidance to test every home makes no exception for counties predicted low.

If Motley County tests above the action level

Nothing about Motley County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Texas's state radon program

Motley County's test kit answers today; a Airthings radon monitor keeps answering for Motley County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Motley County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.