Kings County, NY radon potential

EPA's own radon map rates Kings County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Rank it against the rest of the country and Kings County lands in the 33rd percentile for radon potential.

Where Kings County sits nationally

Kings County, New York is home to about 2,617,631 people across 69.377 square miles. That works out to roughly 37,731 people per square mile. Within its own EPA zone, Kings County is bigger by population than 100% of the counties that share it. EPA's geology-based Region 2 groups Kings County with 82 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

At Zone 3, Kings 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. A Zone 3 rating means Kings County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

If Kings County tests above the action level

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 New York's state radon program

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

Where Kings County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Kings County's numbers. Whatever zone Kings County carries, the zone explainer covers what it does and doesn't tell you about any one house.