Crowley County, CO radon potential

EPA's own radon map rates Crowley County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 71st percentile for radon potential — Crowley County outranks 71% of every county EPA has rated.

Crowley County by the numbers

Crowley County, Colorado is home to about 5,600 people across 787.428 square miles. Averaged across its land area, Crowley County runs about 7 people per square mile. Within its own EPA zone, Crowley County is bigger by population than 16% of the counties that share it. Geologically, Crowley County is grouped into EPA Region 8 alongside 290 other counties that share its rock and soil setting.

What this actually means for a house in Crowley County

Where the national indoor average runs about 1.3 pCi/L, Crowley County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Crowley County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Crowley 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 Colorado's state radon program

For Crowley County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Crowley 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 Crowley 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. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.