Morgan County, UT: EPA's radon zone, explained

EPA's own radon map rates Morgan County zone 2 - moderate potential, predicting a county-wide average indoor level between 2 and 4 pCi/L. That puts Morgan County in the 42nd percentile nationally for radon potential — higher than 42% of the counties EPA has rated.

Where Morgan County sits nationally

Morgan County, Utah is home to about 13,093 people across 609.197 square miles. Averaged across its land area, Morgan County runs about 21 people per square mile. By population, Morgan County is the 755th largest of every county sharing its EPA zone — the 27th percentile by population within that zone. EPA's geology-based Region 8 groups Morgan County with 290 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Morgan County's Zone 2 prediction lands in the gap between the two. A county-wide moderate average, like Morgan County's, can still hide a specific house well above or below it — testing is what actually answers the question.

If Morgan County tests above the action level

For a Morgan 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 Utah's state radon program

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

Where Morgan County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Morgan County's numbers. Whatever zone Morgan County carries, the zone explainer covers what it does and doesn't tell you about any one house.