When you send us this form, please include a copy of the letter that we sent you asking for proof of your. Massachusetts residency status.It typically requires your full name, address, date of birth, contact details, and residency duration. Please accept this as proof of my. Massachusetts residence for health coverage purposes. A proof of residency letter is an acknowledgment or sworn statement stating that an individual resides at a specific address. How to fill out the Massachusetts Affidavit for Residency Under 18? Edit, sign, and share affidavit of residency massachusetts online. No need to install software, just go to DocHub, and sign up instantly and for free. On this ______ day of ______, 20____, I certify that the (preceding) (following).