Street Address, City, State and Zip
All house numbers are written in numeric form except for "one," which is spelled out
Apartment, suite, and zip codes are written in numeric form
Cities, states and numbered streets (i.e. "27th Street") are written out in full (with the exception of D.C.) as: twenty-seventh Street
Avoid abbreviating common words like "Street," "Boulevard," "Avenue"
The only optional abbreviations are for Saint (St.) or Mount (Mt.), which can be written either way
Envelope Mailing Address - Other than U.S. Addresses
When mailing from the US to other countries, here is a link to check the country's guidelines on the US Postal Service website:
The delivery address should appear in all uppercase letters. The name of the place of destination and the name of the country of destination must appear in capital letters together with the correct post code number or delivery zone number, if any. The last line of the address must show only the country name, written in full (no abbreviations) and in capital letters. If possible, the address should have no more than five lines.
Examples
MS C P APPLE
APARTADO 3068
46807 PUERTO VALLARTA JUASCO
MEXICO
MS JOYCE BROWNING
2045 ROYAL ROAD
LONDON WIP 6HQ
ENGLAND
MS JOYCE BROWNING
2045 ROYAL ROAD
06570 ST PAUL
FRANCE
The following format should always be used for destination addresses to Canada:
MS HELEN SAUNDERS
1010 CLEAR STREET
OTTAWA ON K1A 0B1
CANADA