Mail is not delivered via the United States Postal Service on Columbus Day because it is a federal holiday. However, mail delivered through other agencies may still be delivered, depending on each agency's respective policies, which may change from year to year.
The post office celebrates Columbus Day even in states that do not celebrate the holiday, such as Hawaii, California and Nevada. In 2014, agencies such as FedEx and UPS still delivered on the holiday. Since Columbus Day is always the second Monday of October, individuals are advised to make plans in advance to send or receive mail before the holiday.
Columbus Day has been a federal holiday in the U.S. since 1937. It commemorates the arrival of Christopher Columbus in 1492. Columbus Day is observed on the second Monday in October. All federal offices, including the post office, are closed on this day.
As of 2014, the federal government observes 10 holidays, including New Year's Day, President's Day, Memorial Day, Labor Day, Thanksgiving and Christmas. The post office is closed on these holidays.