Claiborne Parish, LA Radon Zone Data

Claiborne Parish, LA: EPA's radon zone, explained

Claiborne Parish is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Rank it against the rest of the country and Claiborne Parish lands in the 9th percentile for radon potential.

Claiborne Parish by the numbers

Claiborne Parish, Louisiana is home to about 13,537 people across 754.794 square miles. That works out to roughly 18 people per square mile. By population, Claiborne Parish is the 741st largest of every county sharing its EPA zone — the 28th percentile by population within that zone. EPA's geology-based Region 6 groups Claiborne Parish with 502 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Claiborne Parish

A Zone 3 county like Claiborne Parish is predicted closer to the 0.4 pCi/L typical outdoors than to EPA's 4 pCi/L action level. A Zone 3 rating means Claiborne Parish's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

Next steps for a home in Claiborne Parish

For a Claiborne Parish 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 Louisiana's state radon program

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

Claiborne Parish's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.