Archer County, TX radon potential

Archer County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. That puts Archer County in the 6th percentile nationally for radon potential — higher than 6% of the counties EPA has rated.

Where Archer County sits nationally

Archer County, Texas is home to about 9,155 people across 903.289 square miles. That works out to roughly 10 people per square mile. Within its own EPA zone, Archer County is bigger by population than 18% of the counties that share it. Archer County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

At Zone 3, Archer 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. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Archer County testing above the action level often enough that skipping a test isn't the safe assumption.

If Archer 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 Texas's state radon program

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

Where Archer 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.