Are USPS post office open today? This little website postofficeopen.us will tell you whether the post office is closed or open today and tomorrow.
On days when the federal government isn't doing business, neither is the post office. The U.S. Postal Service follows the same holiday schedule as federal offices. In 2016, mail won't be delivered on Sundays, nor the following dates: Jan. 1, Jan. 18, Feb. 15, May 30, July 4, Sept. 5, Oct. 10, Nov. 11, Nov. 24, Dec. 26.