Hudson County, NJ radon potential

Hudson County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. That puts Hudson County in the 65th percentile nationally for radon potential — higher than 65% of the counties EPA has rated.

Hudson County by the numbers

Hudson County, New Jersey is home to about 736,185 people across 46.193 square miles. Population density there runs about 15,937 people per square mile. Within its own EPA zone, Hudson County is bigger by population than 97% of the counties that share it. Geologically, Hudson County is grouped into EPA Region 2 alongside 82 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Hudson County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Middle-of-the-pack doesn't mean risk-free for any one Hudson County address — a moderate county average still leaves individual homes to test either side of it.

Testing and mitigation in Hudson 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 New Jersey's state radon program

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

Where Hudson County's figures come from

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