Write a letter to a state agency, like the DMV, or voter registration, that will require an answer from them. To prove residency without bills you can use a driver's license, tax records, financial statements, voter registration, or court documents.Don't have utility bills? 1. Gather required documentation that proves residency. Effective October 6, 2008, all students must submit three proofs of residency. Write bill number on check or money order. A library card is free to Mecklenburg County residents, property owners and students. Queens University of Charlotte has a strict residency requirement. Full-time, enrolled undergraduate students are required to live in campus housing. Must provide proof of Mecklenburg County residency (i.e.