ZIP codes in the Philippines

In the Philippines, a ZIP code is used by the Philippine Postal Corporation (PhlPost) to simplify the distribution of mail.[1][2] While its function similar with the ZIP Codes used in the United States, its form and usage are quite different.Its use is not mandatory but highly recommended by the PhlPost.A ZIP code is composed of a four-digit number representing a locality.Usually, more than one code is issued for areas within Metro Manila, and a single code for each municipality and each city in provinces, with exceptions such as:[1] Additionally, locations such as Basilio Fernando Air Base, Cesar Basa Air Base, Central Luzon State University, Clark Special Economic Zone, Francisco Bangoy International Airport, Laguna Technopark, Ninoy Aquino International Airport (NAIA), Manila Domestic Airport (NAIA Terminals 2 & 4), Mactan-Cebu International Airport, National Center for Mental Health, Philippine Military Academy, University of Mindanao, University of the Philippines (Diliman & Manila campuses), University of the Philippines Los Baños (College Los Baños), and Villamor Air Base have one code each.
ZIP codes of provinces according to the first two numbers
ZIP codes of cities and municipalities in Metro Manila according to the first two numbers
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