Follow the USPS preferred layout for the delivery line, including primary address number, predilection, street name, suffix, postdirectional, secondary address identifier, and secondary number.
Example:
| primary address number | numerical, not word |
|---|---|
| predilection | N (North), E (East), SW (Southwest) |
| street name | normally not abbreviated |
| suffix | St, Dr, Cir |
| postdirectional | N (North), E (East), SW (Southwest) |
| secondary address identifier | Apt, Rm, Ste |
| secondary number | numerical, not word |
Refer to the U.S. Postal Service Address Standards publication for abbreviations of designators not listed below. Abbreviations for Street Designators are defined by the USPS.
http://pe.usps.gov/cpim/ftp/pubs/pub28/pub28.pdf
Abbreviations p. 41, Last Word Abbreviations p. 46, Street p. 57, Business Word p. 79
Secondary designators, such as suite or apartment numbers, should be on the same line as the street address and at the end to the right.
Example:
1356 S Executive Dr Ste 202
1624 W Donner St Apt 101
102 Main St Apt 101
102 Main St Ste 101
102 Main St Rm 101