Morrow County, OR radon potential

EPA's own radon map rates Morrow County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. Morrow County sits at the 41st percentile nationally for radon potential — above 41 of every 100 rated counties.

Where Morrow County sits nationally

Morrow County, Oregon is home to about 12,360 people across 2,030.529 square miles. Population density there runs about 6 people per square mile. Within its own EPA zone, Morrow County is bigger by population than 25% of the counties that share it. Geologically, Morrow County is grouped into EPA Region 10 alongside 141 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

Morrow County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Morrow County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Morrow 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 Oregon's state radon program

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

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