Print it at the top line of the address block. The second line for the street address and suite number.
Thus an address with a suite number would look like this.
How to address an envelope with a suite number. Alexandria bright 54 park boulevard suite 501 los angeles california 90001 however if you have a small envelope and you can t fit the full delivery address on a single line the united states postal service states that you should place the suite number on the line before the delivery address. And the third line for the city state and zip code. A destination address that includes a suite number should contain three lines.
Include the apartment number on the same line as the street address with the abbreviation unit or apt make sure there is a space between and the apt. The usps prefers including the apartment number on one long street address line but also suggests the alternative of including an apt line above the street address. For business mail it s common to include a suite or floor number after the street address.
On the next line place the individual or professional title of the person like certified public accountant. Add the apartment or suite number on the same line as the street name. To write a professional mailing address on an envelope start with the person s name or department.
On the next line write the delivery address. For example you could write 123 main st ste 202 the usps says to avoid punctuation when addressing business mail so don t use periods or commas. Recipient s name apt 1234 street address city state abbreviations zip.
In case you don t use preprinted envelopes put your name company s name title and address in the upper left corner. Company address write the company s delivery address which includes the street address and suite number if applicable on the third line of the envelope. Never write a suite number on the third line.
Include the city state and zip code on the next line. If you use a name include honorifics like mr mrs or dr. Format for longer street addresses that include suite apartment numbers.
The first line for the recipient s name.