Using our Gazetteer, we found that there are two North Carolina communities named Chadwick Acres: This one is located in New Hanover County and the other is located in Onslow County.
If you're interested in how the shape of North Carolina's counties, including New Hanover, have changed over time, we recommend the Atlas of Historical County Boundaries.
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When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 910 code has been Overlayed with the 472 area code. New phone numbers in the Chadwick Acres area will be assigned with one of these codes: 910 or 472. As a result, placing a call in the Chadwick Acres area will require 10-digit dialing (where you enter both the area code and then the phone number).