High Quality Content by WIKIPEDIA articles! The James A. Farley Post Office Building is the main post office building in New York City. Its ZIP code designation is 10001. Built in 1912, the building is famous for bearing the inscription: Neither snow nor rain nor heat nor gloom of night stays these couriers from the swift completion of their appointed rounds. In 1982, the post office was officially designated The James A. Farley Building, as a monument and testament to the political career of the nation`s 53rd Postmaster General. The Farley Post Office is home to "Operation Santa," made famous in the classic 1947 film Miracle on 34th Street..