Kent County, MD radon potential

EPA's own radon map rates Kent County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Kent County ranks higher in radon potential than 13% of rated counties (the 13th percentile).

Where Kent County sits nationally

Kent County, Maryland is home to about 19,557 people across 276.939 square miles. Population density there runs about 71 people per square mile. Within its own EPA zone, Kent County is bigger by population than 39% of the counties that share it. Geologically, Kent County is grouped into EPA Region 3 alongside 244 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

At Zone 3, Kent County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. Don't read Zone 3 as a pass for Kent County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Kent 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 Maryland's state radon program

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

Where Kent County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Kent County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.