Can I get divorced if I don’t  Know Where My Spouse is?
Yes, but you have to show the court that you made reasonable efforts to locate your spouse.  You also must publish a notice in a local newspaper in an attempt to inform your spouse that you have started a divorce.
If it is all possible to find an address, you must attempt to have notice of the divorce action served upon your spouse.  The court has no power to order child support or maintenance unless your spouse has been personally served with notice.