APO/FPO Mail - domestic mail and international mail that bears a U.S. military delivery address or return address and that, in some stage of its transmission, is in the possession of the DOD. This is mail that is being sent to or received from military installations located outside the Continental United States (CONUS). This mail may be official or personal in nature. This mail is centralized at certain locations such as San Francisco and New York for transport overseas. When mail is received in the CONUS from these facilities, letter mail is normally received in sleeved half trays, flats are received in sleeved plastic flat tubs, and parcels are received in #1 sacks.
APO/FPO addresses are not international addresses. There is an assumption, that because the addresses reside in a foreign country, military mail goes through an international postal carrier. This is not so. Our mail goes through United States Postal Service-Priority Mail.
Mail sent to APO/FPO addresses will go either to California, New York, or Florida before it is transported to the overseas military installations.
APO/FPO addresses have a state. These addresses use the following state abbreviations: AE (Armed Forces Europe), AA (Armed Forces Americas), and AP (Armed Forces Pacific).