Is Burlington County, NJ a radon risk area?

EPA's own radon map rates Burlington County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Burlington County in the 64th percentile nationally for radon potential — higher than 64% of the counties EPA has rated.

Where Burlington County sits nationally

About 475,515 people live in Burlington County, New Jersey, spread over 799.292 square miles. Averaged across its land area, Burlington County runs about 595 people per square mile. Rank 54 by population within its EPA zone puts Burlington County at the 95th percentile among zone peers. EPA's geology-based Region 2 groups Burlington County with 82 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Burlington 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 Burlington County address — a moderate county average still leaves individual homes to test either side of it.

Testing and mitigation in Burlington County

Nothing about Burlington County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find New Jersey's state radon program

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

More on how this number was built

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