Bent County, CO: EPA's radon zone, explained

EPA's own radon map rates Bent County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Bent County sits at the 72nd percentile nationally for radon potential — above 72 of every 100 rated counties.

Bent County by the numbers

Bent County, Colorado is home to about 5,779 people across 1,512.847 square miles. Averaged across its land area, Bent County runs about 4 people per square mile. By population, Bent County is the 892nd largest of every county sharing its EPA zone — the 16th percentile by population within that zone. EPA's geology-based Region 8 groups Bent County with 290 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, Bent County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. That doesn't mean every Bent 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.

If Bent County tests above the action level

For a Bent 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 Colorado's state radon program

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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.