Divorces filed by Rockford residents are generally heard in the Circuit Court of Winnebago County, part of Illinois' 17th Judicial Circuit. A local family law attorney who appears there regularly will know the judges, local procedures and mediation expectations. A few Illinois rules shape nearly every case: No-fault divorce. Illinois' only ground for divorce is irreconcilable differences. You do not need to prove wrongdoing. Residency. At least one spouse must have lived in I