Is Niagara County, NY a radon risk area?

EPA places Niagara County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Niagara County in the 62nd percentile nationally for radon potential — higher than 62% of the counties EPA has rated.

How Niagara County compares

About 209,570 people live in Niagara County, New York, spread over 522.348 square miles. Population density there runs about 401 people per square mile. Rank 117 by population within its EPA zone puts Niagara County at the 89th percentile among zone peers. Geologically, Niagara County is grouped into EPA Region 2 alongside 82 other counties that share its rock and soil setting.

Zone vs. an actual test

Call it a middle case: above the 1.3 pCi/L most US homes average, below the 4 pCi/L line EPA uses to recommend mitigation — that's Niagara County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Niagara County — testing is the only way to know an individual home's actual level.

Next steps for a home in Niagara County

Nothing about Niagara 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 York's state radon program

Niagara County's test kit answers today; a Airthings radon monitor keeps answering for Niagara County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.