All mail must be addressed correctly in order for it to be delivered accurately and in a timely manner. The next line includes the name of the recipient. The next to the last line should be the delivery address, box number, or rural route number followed by apartment, unit office, or multi-dwelling number. If the apartment number, etc., will not fit on that line, it should be placed on the line above, not below, the delivery line address. The last line should include the city, state, and Zip Code.
All mail is preferred typed, but handwritten addresses are acceptable if they are legible.
The following is a list of do's and don't's for the addressing of mail. Addressing DO's 1. Black ink on a white background is preferable. Format all lines of the address with a uniform left margin. This gives the OCR a fixed field to scan the address.