'Resident' means any person: (1) Who is domiciled in this State; (2) (i) Who owns, leases, or rents a primary place of residence in this State; and (ii) Who regardless of the person’s domicile resides in this State for more than a year; (3) (i) Who maintains a main or branch office or warehouse facility in this State; and (ii) Who bases and operates motor vehicles intrastate in this State; or (4) Who has filed as a Maryland resident for income tax purposes.
Maryland Legal Code