Domicile is the place where one intends to reside either permanently or indefinitely, and does in fact so reside. Generally, a domicile is your legal permanent base, and a residence is where you currently live.This specific type of affidavit includes important information such as where the deceased person lived and for how long. Domicile refers to the place you call home permanently. Your domicile is important for legal purposes such as paying taxes, voting, and claiming benefits. Under Pennsylvania state law, a student is classified either as a resident or a nonresident of Pennsylvania. An Affidavit of Domicile is a legal document that serves as a sworn statement used to establish the residence or domicile of a deceased person.