DoD members and their dependents are authorized one (1) free U.S. Postal Service (USPS) mailbox at the Osan Post Office. The Post Office offers the same services and rates as stateside post offices.

Sponsors and dependents can request a mailbox up to 45 days prior to your arrival. The Post Office will assign a mailbox number and the combination to it will be provided to you during in-processing.

To request a mailbox, email a copy of orders to

If you do not receive a post office box prior to arrival, you can forward your mail to the general delivery address below.

Squadron/Unit #
APO, AP 96266

Key Things to Remember
  • Submit a change of address before traveling to avoid delays with forwarding bills and mail
  • DoD members must come to the Post Office in person to receive their P.O. Box combination
  • When using USPS on the installation, sending mail or packages back home may take 10-14 days with priority or First Class service
Hours of Operation

Mailing Services Window:
Monday-Friday: 10:00 AM-5:00 PM | Saturday: 10:00 AM-4:00 PM | Sunday: Closed

Official Mail Center:
Monday-Friday: 8:30 AM-4:00 PM | Saturday & Sunday: Closed

Registered Mail Center:
Monday-Friday: 10:00 AM-2:00 PM | Saturday & Sunday: Closed

Package Pick-Up Window:
Monday-Friday: 10:00 AM-6:00 AM | Saturday: 10:00 AM-4:00 PM | Sunday: Closed

Customer Service Window:
Monday-Friday: 10:00 AM-5:00 PM | Saturday & Sunday: Closed

Note: Times may vary during the holidays, family days, or training days.

Looking for more information? Check out the website!