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Marine Corps Air Station Iwakuni, Japan

Welcome to Marine Corps Air Station Iwakuni’s official website. MCAS Iwakuni is the only Marine Corps installation on the mainland of Japan.
Postal Information : Welcome Aboard

Operation Hours

Main Post Office
Main Window Parcel Pick Up Window
Monday - Tuesday
Thursday - Friday
9 a.m. - 3:30 p.m. Monday - Friday 8 a.m. - 5 p.m.
Wednesday 8 a.m. - 1 p.m. Saturday 8 a.m. - 12 p.m.
Saturday 8 a.m. - 12 p.m. Sunday and Holidays CLOSED
Sunday and Holidays CLOSED


North Post Office
Main Window Parcel Pick Up Window
Monday-Tuesday
Thursday-Friday
10 a.m. - 2 p.m. Monday - Friday 10 a.m. - 5 p.m.
Wednesday 10 a.m. - 1 p.m. Saturday, Sunday
and Holidays
CLOSED
Saturday
Sunday and Holidays
CLOSED
Phone Directory
Title DSN
Postal Officer 253-6217
Postal Chief 253-6322
Operations 253-3114
Finance 253-6116
Fax Admin 253-6661
Holiday Closure
January
New Year's Day
Martin Luther King Day
February
Presiden's Day
May
Friendship Day
Memorial Day
July
Independence Day
September
Labor Day
October
Columbus Day
November
Veteran's Day
Thanksgiving Day
December
Christmas Day

* Per III MEF guidance