: Use the official USPS Look Up tool to find a specific +4 code or city by address.
: Home to the University of Puerto Rico at Mayagüez and a major western regional center. Lista 006.zip
If you are looking for a specific address or building within these codes: : Use the official USPS Look Up tool
: For mailing lists or data validation, services like Smarty can provide the most recent ZIP+4 database updates. ZIP Code™ Lookup | USPS Lista 006.zip
: Known for the Rafael Hernández Airport and popular surfing beaches.
: A key industrial and medical hub on the northern coast.