If you have any questions, you should call the Probate Division at 703-246-4153. If you are unable to complete this form, the.How Do I Fill Out an Affidavit of Domicile? Circuit Court fillable forms allow you to enter information on a form while displayed in Adobe Acrobat and then print the completed form out. Parents or legal guardians will need to provide the following documents: Proof of Residency in Fairfax County. TO THE PERSON PREPARING THIS AFFIDAVIT: You must comply with the appropriate requirements listed on the back of this form. Residents file Form 760.