How Long Does the Average Divorce Take in Illinois?

Divorce is one of the most consequential legal processes a person can go through, and one of the first questions we hear from people who walk through our doors in Gurnee is a simple one: how long is this going to take? It is a fair question, and the honest answer is that it depends on more variables than most people expect. If you are beginning to think through your options, understanding the Illinois divorce process from the start can save you real time and real money down the road.

Let us walk through what Illinois law actually requires, what tends to slow cases down, and what a realistic timeline looks like depending on your situation.

What Illinois Law Requires Before a Divorce Can Be Finalized

Before anything else, residency. In Illinois, there is no waiting period to file a petition; however, a judgment may be granted if a party has resided in Illinois for at least 90 days before the case is filed. So if you or your spouse have lived in Illinois for at least three months, the court has the authority to grant the divorce. That is the baseline.

Grounds for divorce are a separate question, and Illinois simplified things considerably a few years back. Illinois eliminated all fault-based grounds for divorce on January 1, 2016. The only ground recognized under Illinois law today is irreconcilable differences. You do not need to prove your spouse did anything wrong. You simply need to establish that the marriage has broken down and that reconciliation is not realistic.

Living separate and apart for six months creates an irrebuttable presumption of irreconcilable differences in Illinois, but it is not required. More precisely: Illinois recognizes irreconcilable differences as the sole ground for divorce, and in many cases, there is no mandatory waiting period if both spouses agree that the marriage is over. If one spouse disputes the breakdown, that six-month separation period becomes relevant as a way to establish the legal grounds for dissolution.

Uncontested Divorce: The Faster Path

Timeline depends almost entirely on whether your divorce is contested. An uncontested divorce in Illinois, where both spouses agree on all terms, can be finalized in two to three months from filing. That is the best-case scenario, and it is achievable when both parties are cooperative and organized from the beginning.

In Lake County, cases are handled through the 19th Judicial Circuit Court in Waukegan. After service, your spouse has 30 days after being served to file an Entry of Appearance form. If your spouse has filed an Appearance and you have reached an agreement on all issues, you can request a prove-up hearing date. A prove-up hearing is the court date when you appear before the judge and request that the judge grant you a divorce based on the terms of your agreement.

If children are involved, there is one more step specific to Lake County. If you and your spouse have minor children together, you must complete the Lake County Parenting Class before the final prove-up hearing. Plan for that requirement early. It is not complicated, but forgetting about it can delay your final hearing date unnecessarily.

For cases with no children, minimal shared assets, and full agreement between both spouses, Illinois law also provides a streamlined option. A joint simplified divorce is the fastest way to get a divorce in Illinois. With this method, the court can finalize your divorce in as fast as a week to a month. Not everyone qualifies, but for couples meeting the specific requirements, it is worth exploring.

Contested Divorce: A Very Different Timeline

Contested cases are a different world entirely.

The factors that tend to extend contested cases are predictable once you know what to look for. Assets and debts take longer to divide the more complex they are. The more spouses disagree, the longer the process takes. If there are minor children in the divorce, it adds a variety of issues to resolve. Court calendar availability matters too. 

Illinois law does provide one important guardrail for cases involving children. There is an Illinois Supreme Court rule that allocation of parental responsibilities matters generally must be resolved within 18 months, subject to court-approved extensions for good cause. That statutory deadline gives contested parenting cases a ceiling, which is genuinely useful when one party is using delay as a strategy.

What Actually Moves Cases Faster or Slower

Beyond the legal framework, real-world behavior shapes the timeline more than most clients realize. A couple of things consistently make a difference in our experience working with clients throughout Lake County and the surrounding area.

Financial disclosure is one of the biggest. An Illinois divorce requires both spouses to produce complete financial disclosure, satisfy statutory residency requirements, meet court-imposed filing deadlines, and execute legally compliant agreements on property division, spousal maintenance, child support, and parental responsibility allocation, simultaneously, under emotional stress, and within a court-managed timeline that neither spouse controls. When financial documents are incomplete or slow to arrive, everything stalls.

Cooperation between spouses is the other major variable. Most divorce cases ultimately are settled by agreement, in part because going to trial can be expensive. Mediation, which Lake County courts often encourage or order when spouses cannot reach agreement on their own, can help bridge gaps without the cost and delay of a full trial. In total, mediation usually takes between three months to a year. That is often still faster than a contested trial, and considerably less expensive.

Property division under Illinois law is another area that can add complexity. Unlike some other states, Illinois law requires that marital property and marital debts be divided equitably, which may or may not be equally. In determining what is equitable, the financial or other contributions each party made in acquiring the property is considered along with each party’s financial circumstances and the likelihood either may acquire assets in the future. 

A Realistic Expectation for Lake County Residents

Even though Illinois law may not impose a statutory waiting period, the practical timeline can vary depending on the complexity of the case. Divorces involving children, substantial assets, or disputes over property and support typically take longer.

We work with clients across Lake County, including in the 19th Judicial Circuit, and the most consistent thing we can say is this: the earlier you get organized and the more clearly you understand what you want from the process, the better positioned you are to move efficiently through it.

Reaching out early is always worth it. By the time a case becomes complicated, some options have already narrowed. The team at Gravel & Wechter, P.C. is here when you are ready to talk through what your specific situation looks like and how we can help you move forward.