What EPA's radon map says about Campbell County

EPA's own radon map rates Campbell County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Campbell County sits at the 59th percentile nationally for radon potential — above 59 of every 100 rated counties.

Campbell County by the numbers

About 94,008 people live in Campbell County, Kentucky, spread over 151.32 square miles. Averaged across its land area, Campbell County runs about 621 people per square mile. Among counties sharing Campbell County's EPA zone, it outranks 79% of them by population. Campbell 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 Campbell County

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Campbell County's Zone 2 prediction lands in the gap between the two. Nothing about a Zone 2 label lowers the case for testing in Campbell County — EPA recommends it in every zone, moderate included.

Testing and mitigation in Campbell County

Mitigation cost doesn't depend on Campbell County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Kentucky's state radon program

Campbell County's test kit answers today; a Airthings radon monitor keeps answering for Campbell County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Campbell County carries, the zone explainer covers what it does and doesn't tell you about any one house.