Individuals who do not have either their domicile or statutory residence in Pennsylvania are considered nonresidents for personal income tax purposes. What does Pennsylvania domicile mean?Domicile is the place where one intends to reside either permanently or indefinitely, and does in fact so reside. Your domicile is your fixed and permanent home to which you always have the intention of returning whenever absent, even though you may live elsewhere. 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. An affidavit of domicile is a legal document that verifies the primary place of residency of someone after their death. An affidavit of domicile is a legal document that certifies the residence of a deceased person.