Tyler County, WV: EPA's radon zone, explained

EPA places Tyler County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Tyler County sits at the 38th percentile nationally for radon potential — above 38 of every 100 rated counties.

Tyler County by the numbers

Tyler County, West Virginia is home to about 7,843 people across 256.302 square miles. Averaged across its land area, Tyler County runs about 31 people per square mile. By population, Tyler County is the 873rd largest of every county sharing its EPA zone — the 15th percentile by population within that zone. EPA's geology-based Region 3 groups Tyler County with 244 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Tyler County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Middle-of-the-pack doesn't mean risk-free for any one Tyler County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Tyler County

For a Tyler 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 West Virginia's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Tyler County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.