Caldwell County, NC radon potential

Caldwell County is mapped as Zone 2 - Moderate Potential by EPA — meaning the county-wide average indoor level is predicted between 2 and 4 pCi/L. Caldwell County sits at the 58th percentile nationally for radon potential — above 58 of every 100 rated counties.

Where Caldwell County sits nationally

Caldwell County, North Carolina is home to about 80,739 people across 471.885 square miles. That works out to roughly 171 people per square mile. Within its own EPA zone, Caldwell County is bigger by population than 77% of the counties that share it. Caldwell County falls in EPA Radon Region 4, one of 736 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Caldwell County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Caldwell County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Caldwell 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 North Carolina's state radon program

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

Caldwell County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.