Mail Delivery December 26 2025 Holidays. Usps is closed for 11 holidays in 2025, though additional days may be added throughout the year to account for days of mourning and other exceptions. The postal service delivers mail almost every day of the year with the exception of sundays and a few national holidays.

Below is a list of the 2024 post office holidays. Mail will not be delivered or sent on these days so plan accordingly.