Is Deaf Smith County, TX a radon risk area?

EPA's own radon map rates Deaf Smith County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Nationally that's the 45th percentile for radon potential — Deaf Smith County outranks 45% of every county EPA has rated.

Where Deaf Smith County sits nationally

About 18,495 people live in Deaf Smith County, Texas, spread over 1,496.822 square miles. Population density there runs about 12 people per square mile. Rank 652 by population within its EPA zone puts Deaf Smith County at the 37th percentile among zone peers. Deaf Smith County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Deaf Smith County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Deaf Smith County — testing is the only way to know an individual home's actual level.

Next steps for a home in Deaf Smith County

Nothing about Deaf Smith 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

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

More on how this number was built

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