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

EPA's own radon map rates Victoria County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. That puts Victoria County in the 26th percentile nationally for radon potential — higher than 26% of the counties EPA has rated.

Victoria County by the numbers

Victoria County, Texas is home to about 91,949 people across 882.087 square miles. Averaged across its land area, Victoria County runs about 104 people per square mile. By population, Victoria County is the 227th largest of every county sharing its EPA zone — the 78th percentile by population within that zone. EPA's geology-based Region 6 groups Victoria County with 502 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

A Zone 3 county like Victoria County is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. Even at Zone 3, Victoria County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

Next steps for a home in Victoria County

For a Victoria 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 Victoria County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Victoria 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 Victoria County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Victoria County's numbers. Whatever zone Victoria County carries, the zone explainer covers what it does and doesn't tell you about any one house.