Lincoln Parish, LA radon potential

Lincoln Parish is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 22nd percentile for radon potential — Lincoln Parish outranks 22% of every county EPA has rated.

How Lincoln Parish compares

Lincoln Parish, Louisiana is home to about 48,243 people across 471.636 square miles. That works out to roughly 102 people per square mile. Within its own EPA zone, Lincoln Parish is bigger by population than 66% of the counties that share it. Lincoln Parish falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Lincoln Parish

Lincoln Parish's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. A Zone 3 rating means Lincoln 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.

If Lincoln Parish tests above the action level

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 Louisiana's state radon program

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

Where Lincoln Parish'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.