Mail delivery is conducted on Patriots' Day. The United States Postal Service (USPS), as a federal agency, does not observe state-level holidays. Patriots' Day is a civic holiday officially recognized in Massachusetts and Maine, but it is not designated as a federal holiday by the United States government. Consequently, all federal operations, including postal services, continue on their normal schedules.
The distinction between federal and state holidays is the central factor governing mail service. Federal holidays are established by federal law and lead to the nationwide closure of non-essential federal government offices and services, including the USPS. In contrast, state holidays are recognized only within the jurisdiction of a specific state. While state government offices, public schools, and some private businesses may close in observance of Patriots' Day in Massachusetts and Maine, federal entities are unaffected. This principle applies to other private mail carriers such as UPS and FedEx, which also maintain standard delivery and pickup schedules as they primarily align their holiday closures with the federal calendar.
Therefore, individuals and businesses can expect regular mail delivery, package drop-offs, and fully operational post offices on Patriots' Day. The operational status of mail service is contingent solely on a holiday's federal designation, ensuring a consistent and predictable schedule for postal logistics across the entire country, irrespective of local or state-specific observances.