Metcalfe County, KY radon potential

EPA places Metcalfe County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Metcalfe County in the 76th percentile nationally for radon potential — higher than 76% of the counties EPA has rated.

Metcalfe County by the numbers

Metcalfe County, Kentucky is home to about 10,558 people across 289.651 square miles. That works out to roughly 36 people per square mile. Within its own EPA zone, Metcalfe County is bigger by population than 30% of the counties that share it. Metcalfe County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Metcalfe County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Metcalfe County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. Being in Zone 1 raises the odds Metcalfe County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

Testing and mitigation in Metcalfe County

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 Kentucky's state radon program

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

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