Usps Mail Holidays 2024. In observance of the columbus day holiday, postal service facilities will be closed for retail services and there will be no regular mail deliveries on monday, october 14, 2024. Usps delivers mail on saturdays, but with shorter business hours, and remains closed on sundays as well as on federal holidays.

19 for priority mail service. In observance of the columbus day holiday, postal service facilities will be closed for retail services and there will be no regular mail deliveries on monday, october 14, 2024.