Find Divorce Records in Mercer County

Mercer County divorce records are held by the Circuit Court Clerk in Aledo, the county seat in the northwestern part of Illinois near the Iowa border. Mercer County falls within the 14th Judicial Circuit. Divorces filed in this county are processed through the Aledo courthouse, and anyone needing a statewide confirmation can also use the Illinois Department of Public Health's verification service for divorces on file since 1962.

The Circuit Court Clerk's Office in Aledo

The Mercer County Circuit Court Clerk in Aledo maintains all divorce case files for the county. This includes the original petitions, temporary orders, final decrees, and any supporting documents filed by the parties or ordered by the court. If you need a certified copy of a divorce decree or want to confirm whether a specific case is on record, the clerk's office is your starting point. Call 309/582-7122 to ask about a case and find out what the current copy fees are.

For the clerk's mailing address, check the Illinois Courts circuit court clerk directory. This statewide directory is updated by the Illinois court system and covers every county in the state. It is the most reliable source for the Aledo office's current mailing address if you plan to submit a written request.

Mercer County borders Iowa across the Mississippi River, and some families in the county have ties to both states. If you believe a divorce may have been filed in Iowa rather than Illinois, you would need to check Iowa's court system separately. Illinois records will only reflect cases filed within the state.

Note: The clerk's office does not interpret legal documents. If you have questions about what a decree means for your situation, talk to a licensed Illinois attorney.

Types of Documents and What They Cover

The key document in any Mercer County divorce case is the final decree of dissolution of marriage. This is the court order that officially ends the marriage. It names both parties, gives the date of the divorce, and sets out the court's rulings on property division, debt, spousal support, and, where applicable, child custody and support. A certified copy of this decree carries the court's seal and is the standard document used for legal and official purposes.

The full case file behind the decree contains everything the parties filed and the court issued during the divorce proceeding. This includes the initial petition, financial disclosures, responses, and any motions and orders. Contested divorces generate much larger files than uncontested ones. If you only need basic information about a divorce, the decree itself is usually enough. If you are doing legal research or responding to a complex situation, you may need the full file.

Illinois Department of Public Health Verifications

The Illinois Department of Public Health keeps a statewide index of divorces granted in Illinois since 1962. For $5, IDPH will search the index and send you a verification letter. The letter confirms the divorce happened, names the parties, and identifies the county and year. It does not show terms, property orders, or custody details. For many uses, this level of confirmation is enough. For legal proceedings that require a court-certified document, you need the circuit court clerk instead.

Mail your request with a copy of valid government-issued photo ID to IDPH in Springfield. The IDPH valid ID page lists what forms of identification qualify. Turnaround by mail is 4 to 6 weeks. Call (217) 782-6553 if you have questions before submitting.

The IDPH vital records page outlines the verification letter service, required ID, and how to submit a mail-in divorce record request.

Illinois Law Governing Divorce

Mercer County divorces follow the Illinois Marriage and Dissolution of Marriage Act, 750 ILCS 5. This is the controlling statute for all aspects of divorce in Illinois. The law sets venue requirements, outlines the grounds for divorce (irreconcilable differences only, as of 2016), and establishes how courts divide assets, address debts, and manage child-related issues. Any divorce granted in Mercer County was processed under this statute.

Record maintenance and public access are governed by the Vital Records Act, 410 ILCS 535. Divorce records are public in Illinois. Courts can seal a file in limited situations where public access would cause demonstrable harm, but that is not the default. Most Mercer County divorce records are fully accessible by the public on request.

Older Records and Genealogy Searches

Mercer County has been around since 1825, making it one of the older counties in western Illinois. Divorce records from the 19th century may not be at the Aledo courthouse anymore. The Illinois State Archives at (217) 782-4682, accessed online at illinois.gov/ihpa/Archives, holds older county records that have been transferred to state custody. If you are researching a divorce from before World War II or from the 1800s, the archives should be your first call rather than the circuit court.

The Illinois State Genealogical Society is another resource for historical research in western Illinois. Their tools and expertise are particularly useful when you know a family lived in the Mercer County area but are not certain whether the divorce you are looking for was filed in Illinois or in Iowa, given how close the county seat is to the Mississippi River.

The Illinois Courts clerk directory provides current contact information for the Mercer County clerk's office in Aledo and every other Illinois county.

How to Request a Record

Call the clerk at 309/582-7122 first. This is the fastest way to confirm a case exists and get the current fee. If you want to visit in person, the clerk can usually produce copies on the same day for straightforward requests. Mail requests are processed when you send the request form, a copy of your ID, and payment for the fee. Use the mailing address from the Illinois Courts directory. Include a self-addressed stamped envelope to speed up the return delivery.

For an IDPH verification, mail that request separately to Springfield. Those two requests are handled by different agencies and go to different addresses. Do not mix them up in one envelope.

Neighboring Counties

Mercer County shares borders with several other Illinois counties. Neighboring courts include Rock Island County, Henry County, Knox County, Henderson County, and Warren County. Mercer County also borders Iowa across the Mississippi, so divorces involving Iowa residents may be on file in Iowa's courts rather than in Aledo.