government’s fiscal year runs from October 1 through September 30. This might not match what your calendar says, because the U.S. WAC – Western Adjudication Center (now known as California Service Center)Īfter the service center code are two digits that represent the fiscal year the case was received. SRC – Southern Regional Center (now known as Texas Service Center) MSC – Missouri Service Center (now known as National Benefits Center) LIN – Lincoln Service Center (now known as Nebraska Service Center) This series begins with 3 letters, which indicate the service center which received the case for residency status:ĮAC – Eastern Adjudication Center (now known as Vermont Service Center) The next ten digits (6-15) are called the alien number.Īnd then, finally, the green card number starts. Following are letters indicating the country of residence, USA, digits 3-5. The first line of the 90 character string on the back of a green card starts with C1 or C2, which indicates whether the green card holder is a long-term permanent resident within the US (C1), or a permanent resident commuter, from Canada or Mexico (C2).
