Tioga County, NY radon potential

EPA places Tioga County in Zone 1 - Highest Potential — a predicted county-wide average indoor radon level above 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Tioga County ranks higher in radon potential than 90% of rated counties (the 90th percentile).

Tioga County by the numbers

Tioga County, New York is home to about 47,574 people across 518.767 square miles. That works out to roughly 92 people per square mile. Within its own EPA zone, Tioga County is bigger by population than 69% of the counties that share it. EPA's geology-based Region 2 groups Tioga County with 82 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Where the national indoor average runs about 1.3 pCi/L, Tioga County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. That doesn't mean every Tioga County house tests high — a zone is a county-wide prediction, never a single-home reading — but it's a reason to test sooner rather than let it wait.

Testing and mitigation in Tioga 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 York's state radon program

For Tioga County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Tioga 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 Tioga County's figures come from

Tioga 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.