Oneida County, NY: EPA's radon zone, explained

Oneida 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. Nationally that's the 63rd percentile for radon potential — Oneida County outranks 63% of every county EPA has rated.

Oneida County by the numbers

Oneida County, New York is home to about 228,347 people across 1,212.442 square miles. Averaged across its land area, Oneida County runs about 188 people per square mile. By population, Oneida County is the 106th largest of every county sharing its EPA zone — the 90th percentile by population within that zone. Oneida County falls in EPA Radon Region 2, one of 83 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Oneida County

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 Oneida County's Zone 2 prediction. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Oneida County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Oneida County

For a Oneida County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find New York's state radon program

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

Where Oneida County's figures come from

Oneida County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.