Swisher County, TX radon potential

EPA places Swisher 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. Swisher County sits at the 37th percentile nationally for radon potential — above 37 of every 100 rated counties.

Swisher County by the numbers

Swisher County, Texas is home to about 6,877 people across 890.16 square miles. That works out to roughly 8 people per square mile. Within its own EPA zone, Swisher County is bigger by population than 13% of the counties that share it. Swisher County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Swisher County's Zone 2 prediction lands in the gap between the two. Swisher County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

Next steps for a home in Swisher 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 Texas's state radon program

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

Where Swisher County's figures come from

Swisher County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Swisher County carries, the zone explainer covers what it does and doesn't tell you about any one house.