Jones County, TX: EPA's radon zone, explained

Jones County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Rank it against the rest of the country and Jones County lands in the 14th percentile for radon potential.

How Jones County compares

Jones County, Texas is home to about 20,850 people across 928.606 square miles. Averaged across its land area, Jones County runs about 22 people per square mile. By population, Jones County is the 598th largest of every county sharing its EPA zone — the 42nd percentile by population within that zone. Jones County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Jones County's Zone 3 prediction is the low end of the scale. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Jones County testing above the action level often enough that skipping a test isn't the safe assumption.

If Jones County tests above the action level

For a Jones County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Texas's state radon program

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

Where Jones County's figures come from

Jones County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.