To file for divorce in Illinois, one spouse must have lived in Illinois for at least 90 days before the entry of the divorce judgment. This means that someone who lives in Illinois can get a divorce from a spouse who lives outside of Illinois.
If the divorce case will decide who gets parental responsibilities for any children, the children must have lived in Illinois for at least 6 months. However, there are exceptions to this, so it is best to talk to a lawyer if this is a concern.
Updated: September 2016