World's Largest Post Office to Serve 7 Million Customers on Year's Busiest Mailing Day WASHINGTON, Dec. 16, 2016 (GLOBE NEWSWIRE) -- The U.S. Postal Service announced that Monday, Dec. 19, will be the busiest mailing day of the year. Of the 12 million customers visiting the nation's...

World's Largest Post Office Does More Business Than Post Offices in Top Five Media Markets Combined WASHINGTON, Dec. 8, 2015 (GLOBE NEWSWIRE) -- Customers are always at the front of the line at this Post Office that never closes. With a click of the mouse customers can conveniently ship from their...