-The Canadian Postal Service (Canada Post) also offers a very useful web site:
http://www.canadapost.ca/personal/tools/pg/manual/PGaddress-e.asp
All information is typed in mixed case format, (i.e. not all caps or all lower). Spell out city names in their entirety. If it is necessary to abbreviate city names to fit within 20 characters, use abbreviation standards described herein or in the US Postal Service Postal Addressing Standards (system-generated from zip code entry).
State codes MUST be entered for all U.S. and Canadian addresses. The appropriate code may be selected using Banner software. For additional information, refer to the Postal Service Address Standards publication. The State and Province values are validated based on the State/Province Code Validation (STVSTAT) form.
Canadian Provinces are entered in the State/Province field, NOT in the City field. Canadian Provinces include Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland, Northwest Territories, Nova Scotia, Ontario, Prince Edward Island, Quebec, Saskatchewan, and Yukon and have their own code for entry into the State Field. Note: Canadian addresses must include the city in the City Field and the Province in the State Field (system-generated from zip code entry).
The County will be system-generated from the zip code entry. Do not enter county code for international addresses.
Zip or postal codes MUST be entered for all U.S. and Canadian addresses. For all US addresses, enter the five-digit zip code before entering the city, county, or state. If the zip code is entered correctly the city, county, and state are automatically displayed in the appropriate fields. This not only eliminates the need to key this information, but also ensures that it is correct. Note that you must enter the five-digit zip code only, then press the ENTER key (or the TAB key), which will cause Banner to fill in the city, county, and state. You can then return to the zip code to add the remaining digits.
A Hyphen must be entered when the entire 9 digit (zip plus four) zip code is available. If the last four digits are unavailable, enter the first five digits in the first five positions of the field without the hyphen.