Eligible personnel
- All personnel on accompanied tours (regardless of their parent unit).
- All Department of Defense (DOD) civilian employees.
- All unaccompanied personnel assigned or attached to any unit permanently stationed aboard MCAS Iwakuni.
- All personnel assigned to the Branch Health Clinic, Dental Clinics, and permanently assigned tenant commands.
Three ways to obtain a mailbox
- Have your sponsor provide a copy of your original or WEB Orders for verification (and your area clearance if you're bringing your family) to the Mainside Post Office to open your mailbox. Be sure all family members' full, legal names are listed on the area clearance exactly as they appear on their Military ID Card or passport to include those with different last names (if applicable).
- E-mail to "M_IWKN_SMB Iwakuni Postal IWKN_SMBIwakuniPos@usmc.mil" a copy of your PCS Orders and Area Clearance Form.
- Wait till you arrive to the air station to establish a mailing address for you and/or your family.
Important Note
These PO boxes are to be used exclusively for the receipt of personal mail for you and/or your family. Per currently existing postal regulations, they may not be used to receive mail pertaining to home businesses or similar profit-making ventures, nor can they be used by any person other than the assigned box holder and their command-sponsored family members.
Immediately upon arrival at MCAS Iwakuni, all PO Box holders will need to come to the Parcel Pickup Window at the assigned Post Office to finalize check-in, sign for PO Box keys or combination and pick up any mail that may have already arrived for them.
If your sponsor prescribed you a mailbox prior to your arrival and you were assigned a box number between 1-3900, you will need to check in at the Mainside Post Office. If your sponsor prescribed you a mailbox number between 6000-9180, you will need to check in at the Northside Post Office.