Usps 2025 Holidays Observed. 2025 post office holidays/events maybe now you’re wondering, “when does the post office close?” there are a handful of usps holidays sprinkled throughout the year, and. The united states postal service posts it’s official holidays here.

Federal holidays that fall on saturday are celebrated on the preceding friday and federal holidays that fall on sunday. “if a holiday falls on a sunday, the following monday is observed as the holiday.