The venue for guardianship proceedings for an incapacitated person is in the county where the incapacitated person resides or is present. If the incapacitated person is admitted to an institution pursuant to order of a court of competent jurisdiction, venue is also in the county in which that court sits.
A.R.S. § 14-5302
Venue
Official source: Arizona State Legislature. Reproduced from public-domain Arizona statutes; confirm against the official source for the current text. Not legal advice.