I compiled, search and copied this list of postal code in Cavite. I know somehow, this can help some people out there who are seeking this kind of information. Here is the list.
Cavite Postal Codes
4100: Cavite City
4101: Sangley Point Naval Base
4125: Corregidor Island
4115: Dasmarinas Resettlement Area
4124: General Emilio Aguinaldo (Bailen)
4117: General Mariano Alvarez
4107: General Trias
4121: Mendez (Mendez-Nuñez)
4110: Naic 4105: Noveleta
4120: Tagaytay City
4111: Ternate including Caylabne Bay & Puerto Azul
4109: Trece Martires City
This information is complete and accurate as of this posting, if somehow you find it inaccurate or some info are missing, feel free to state it on the comment section.