The U.S. Postal Service provides lists of ZIP codes for Portland and areas throughout the country; they are available, as a list or by address, via the ZIP code lookup tool on the USPS website. There are 56 ZIP codes used within Portland as of 2015.
Twenty of Portland's ZIP codes are reserved for specific post office box addresses, while the 97256 code is used solely for Pacific Power's billing department.
City Hall is located in the 97201 ZIP code, the NBA's Portland Trail Blazers' Moda Center arena is in 97227, and the Providence Park stadium, which houses the Portland Timbers Major League Soccer team, is in 97205.