Write the recipient’s full name on the first line
Write the street address or house number and street name on the second line
Write the apartment, suite, or unit number if needed on the same line or the line below
Write the city, state or province, and ZIP or postal code on the next line
Write the country on the last line for international mail
Place the address in the center of the envelope
Write the return address in the top left corner
Use clear, legible handwriting or printed text
Use black or blue ink
Avoid punctuation unless required by local postal rules