The question of, “Will mail be delivered on Martin Luther King Day?” is answered with a big “No.” All post offices and federal offices of any kind will be closed for the holiday, which means that no businesses nor homes will get mail. This also counts out USPS packages. According to USPS, because it is a federal holiday, all federal offices are closed. However, all federal workers are still paid for the day.
Fedex and UPS will not be closed, according to their websites, so you should get your packages on time. In fact, you can check out the entire holiday schedule for Fedex by clicking here, with additional details on their holiday dates here.
Additional holidays on which mail is not delivered are:
New Year’s Day
Washington’s Birthday (President’s Day)