Mapped boundaries are based on United States Postal Service (USPS) delivery routes and are assigned default place names. ZIP codes do not exist with actual boundary lines but are represented by points of delivery (i.e. The ZCTAs have been modified to account for confirmed ZIP codes in use based on Chatham County GIS addressing data. Chatham County ZIP code boundaries are derived from ZIP Code Tabulation Areas (ZCTAs) developed from 2010 Census data by the United States Census Bureau.
Wake County ZIP code boundaries as depicted on the aforementioned map are compiled from Wake County Geographic Information System (GIS), which uses the best available sources and are used for reference purposes only. The Town of Apex is not responsible for any errors or omissions concerning the content and positional accuracy of the USPS ZIP code boundaries displayed. The general assignment of USPS ZIP codes depicted on the linked map (PDF) have been provided as a public service in cooperation with the United States Postal Service (USPS).
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