A green card has four numbers on the front, reports U.S. Citizenship and Immigration Services. They are the card or document number, the alien or USCIS number, birthdate, and card expiration date,
Whether a green card includes an alien number or a USCIS number is determined by when the card is issued, according to U.S. Citizenship and Immigration Services. Cards issued before 2010 have an alien number. The alien number is at the top of the card and includes either the letter "A" followed by eight digits or "A#" followed by nine digits. Cards issued after 2010 have a nine-digit USCIS number.
A green card also has a card or document number, as stated by U.S. Citizenship and Immigration Services. This number is on the front of cards issued before 2010 and the back of cards issued after 2010. It is three letters followed by 10 digits just to the left of the two less-than signs on the first of the three lines at the bottom of the card.