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Biliran ZIP Codes, Postal Codes, and Phone Area Codes Biliran is located in the Eastern Visayas region and has a total area of 536.01 square kilometers. It is composed of 8 municipalities and 132 barangays including its capital town, Naval.
Feb 26, 2021 · Also known as postal codes, ZIP codes in the Philippines are used for conveniently locating addresses for letters, parcels, and packages. The general rule is that the PH ZIP code must be in the left side of the last line of the address. There are no 5-digit ZIP codes in the Philippines, as in the case of the United States.