For a document to prove residence, it must state the residential address. A P.O. Box is not an acceptable proof of residency.Proof of residency includes a government issued ID (driver's license, passport; military ID) with your current address on the ID. Write a letter to a state agency, like the DMV, or voter registration, that will require an answer from them. I need 2 documents to prove my residency to get a real ID. Download a proof of residency letter template for family members, notarized or non-notarized, tailored for legal use. • Proof of date of birth. • Proof of signature.