Filing for Divorce in Cook County, Illinois

You take an important first step toward ending a marriage when you file for divorce in Cook County. Illinois follows a “no-fault” divorce system, which simplifies the process, but you still must meet certain legal requirements.

1. Residency Requirement

You or your spouse must live in Illinois for at least 90 days before the court enters the final divorce judgment. You can file the petition earlier, but the court cannot finalize your divorce until you meet this residency rule. This requirement gives the Illinois court authority over your case.

2. Grounds for Divorce

Illinois only recognizes one ground for divorce: irreconcilable differences. You show that your marriage has broken down and that reconciliation is not possible or not in your family’s best interests. You do not need to prove fault such as adultery or abuse.

You also strengthen this claim by showing a six-month separation period before the judge enters the final judgment. During this time, you and your spouse live separate lives for at least six continuous months. You can even live in the same home, as long as you no longer function as a married couple.

3. The Divorce Process in Cook County

Once you meet the basic requirements, you move through the court process:

File the Petition: One spouse files a Petition for Dissolution of Marriage with the Cook County Circuit Court to start the case.

Serve the Other Spouse: The other spouse receives legal notice of the divorce and has time to respond.

Resolve Key Issues: You address all major matters, including:

  • Division of property and debts
  • Spousal support (maintenance)
  • Parenting time, decision-making, and child support (if applicable)

Finalize the Divorce: A judge reviews your agreement or holds a trial, then signs a Judgment for Dissolution of Marriage to legally end the marriage.

Get the Right Support

You can handle some divorces without conflict, but many cases involve complex decisions and legal details. An experienced Cook County divorce attorney can help you protect your rights, reduce stress, and guide you through each step of the process.