What is the postal code in Philippines?

You have to know what area in the Philippines you want to write to, the best I can do for you is provide the site that gives you all the zip codes for the area your looking for, search the site and find the exact area.

• Philippines ZIP Codes Directory

  Complete list of All Postal ZIP codes in the Philippines and Telephone Area Codes list with a detailed Philippine map.

http://zip-codes.philsite.net/