Code of Alabama
Article 1 - Divorce From Bonds of Matrimony.
Section 30-2-4 - Where Complaint to Be Filed.

Complaints for divorce may be filed in the circuit court of the county in which the defendant resides, or in the circuit court of the county in which the parties resided when the separation occurred, or if the defendant is a nonresident, then in the circuit court of the county in which the other party to the marriage resides.