Carteret County, NC radon potential

EPA's own radon map rates Carteret County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally, Carteret County ranks higher in radon potential than 24% of rated counties (the 24th percentile).

How Carteret County compares

Carteret County, North Carolina is home to about 70,259 people across 507.607 square miles. That works out to roughly 138 people per square mile. Within its own EPA zone, Carteret County is bigger by population than 74% of the counties that share it. EPA's geology-based Region 4 groups Carteret County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Carteret County

Carteret County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. A Zone 3 label describes Carteret County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

If Carteret County 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 North Carolina's state radon program

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

The methodology guide shows exactly which EPA and Census sources feed Carteret County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.