Pendleton County, KY: EPA's radon zone, explained

EPA's own radon map rates Pendleton County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally, Pendleton County ranks higher in radon potential than 79% of rated counties (the 79th percentile).

Pendleton County by the numbers

Pendleton County, Kentucky is home to about 14,844 people across 277.148 square miles. Averaged across its land area, Pendleton County runs about 54 people per square mile. By population, Pendleton County is the 663rd largest of every county sharing its EPA zone — the 38th percentile by population within that zone. EPA's geology-based Region 4 groups Pendleton County with 735 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Pendleton County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. That doesn't mean every Pendleton County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Next steps for a home in Pendleton County

For a Pendleton 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 Kentucky's state radon program

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

Where Pendleton 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. Whatever zone Pendleton County carries, the zone explainer covers what it does and doesn't tell you about any one house.