How can I file for divorce if I now live in a different state?

You can file a petition for dissolution of your marriage in Oregon if you have been here for more than six months. However, if your spouse is not a resident of Oregon all you can get is the judgment of dissolution as the Oregon courts would not have jurisdiction to adjudicate child custody or parenting time or to award spousal support or divide property and debt unless your spouse were to consent to jurisdiction in Oregon. If you do have kids and they are still living in California, that state would have sole jurisdiction to determine custody, parenting time and child support. On the other hand, if you have a child or children living with you in Oregon, the Oregon Division of Child Support cam make an administrative child support order which would be enforced by the California child support agency.