Ala. Code § 17-3-33: Domicile of Persons Located Partly in Multiple Counties, Districts, or Precincts.

When the dwelling of any person is located partly in two or more counties, districts, or precincts, such persons may select the county, district, or precinct of their domicile, and to that end may file a statement in writing in the office of the judge of probate of the county selected, setting forth the locality of their dwelling and the lines passing through the same, together with the county, district, or precinct selected for domicile, which statement, when filed and recorded, shall establish the domicile of the person filing it in the county, district, or precinct of their selection.