Married US citizen, want divorce

Where you need to file depends on what court has jurisdiction.  Subject matter jurisdiction is the power of the court to enter an enforceable order regarding the issues in a divorce. Georgia courts have subject matter jurisdiction when one of the parties has been a resident of the state of Georgia for at least six months at the time of the filing of the complaint (the document to initiate a divorce action).    In Georgia, the court must also have jurisdiction over the person.  As such, you usually need to file in the county where your spouse resides.  If your spouse does not live in the same county as you, but will consent to the jurisdiction of your county's court, you should be able to file in the county you live in.