Wake County, NC radon potential

EPA places Wake County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Rank it against the rest of the country and Wake County lands in the 66th percentile for radon potential.

How Wake County compares

Wake County, North Carolina is home to about 1,232,444 people across 834.778 square miles. Population density there runs about 1,476 people per square mile. Within its own EPA zone, Wake County is bigger by population than 99% of the counties that share it. Geologically, Wake County is grouped into EPA Region 4 alongside 735 other counties that share its rock and soil setting.

Why the zone isn't the answer by itself

EPA's Zone 2 rating for Wake County sits below its own 4 pCi/L action level but above the national indoor average of about 1.3 pCi/L. Nothing about a Zone 2 label lowers the case for testing in Wake County — EPA recommends it in every zone, moderate included.

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

Where Wake County's figures come from

Wake County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Wake County carries, the zone explainer covers what it does and doesn't tell you about any one house.