Overview
Jefferson County is located in Illinois with a population of approximately 36,107. The Jefferson County Circuit Court handles all probate and estate matters for decedents who were domiciled in the county at the time of death.
Illinois probate is governed by the Probate Act of 1975 (755 ILCS 5/). The process begins with filing a Petition for Probate of Will and for Letters Testamentary (if there is a will) or a Petition for Letters of Administration (if there is no will) to admit the will and appoint a personal representative. The court then issues Letters Testamentary for testate estates or Letters of Administration for intestate estates.
For smaller estates, Illinois offers a Small Estate Affidavit procedure. As of August 2025, this is available for estates valued at $150,000 or less (excluding real estate that does not pass by survivorship) without the need for formal court administration.
Illinois does not have a statutory fee schedule for attorneys or executors; fees must be "reasonable" based on the services performed, the size of the estate, and the complexity of the work.
This guide provides an informational overview of the Jefferson County probate process. It is not legal advice and is not a substitute for consulting a qualified attorney. Laws and local procedures may change — verify current requirements with the court.
Courthouse Information
Jefferson County Circuit Court
Probate matters in Jefferson County are handled at the Jefferson County Courthouse.
Address: 100 S. 10th St., Mt. Vernon, IL 62864
Phone: (618) 244-8007 or (618) 244-8008 (Circuit Clerk)
Hours: Monday through Friday, 8:00 AM to 4:00 PM
The Circuit Clerk's office is responsible for maintaining court files, including probate, traffic, and civil cases.
Parking and Access
Public parking is available around the courthouse square and in nearby designated lots. Visitors must pass through security screening upon entering the building. Cell phones may be restricted in courtrooms.
Filing Process
Step 1: Determine If Probate Is Necessary
Before filing, assess whether formal probate is required:
- Small Estate Affidavit: If the personal estate is valued at $150,000 or less and includes no real estate (or real estate that passes by survivorship), you may be able to use a Small Estate Affidavit instead of formal probate.
- Joint Tenancy/Survivorship: Assets held in joint tenancy or with a named beneficiary (like life insurance or payable-on-death accounts) generally bypass probate.
- Trust administration: Assets held in a living trust generally do not require probate.
Step 2: File the Petition
If formal probate is needed, file a Petition for Probate of Will and for Letters Testamentary (or Petition for Letters of Administration) with the Jefferson County Circuit Clerk. Include:
- The original will and codicils (if applicable)
- Affidavit of Heirship setting forth the decedent's heirs
- Copy of the death certificate
- Filing fee (approximately $300-$400)
- Oath and Bond of Representative (Surety or No Surety)
E-filing is mandatory for civil cases in Illinois, including probate, for attorneys and self-represented litigants (unless an exemption applies).
Step 3: Provide Notice
After filing, you must:
- Mail notice of the hearing to all heirs, beneficiaries, and interested parties at least 30 days before the hearing (or as required by statute for admission of will).
- Publish notice in a newspaper of general circulation in Jefferson County (such as Centralia Morning Sentinel) once a week for three successive weeks to notify creditors.
Step 4: Attend the Hearing
The court will schedule a hearing on the petition. At the hearing, the judge reviews the petition and, if approved, issues Letters Testamentary or Letters of Administration, which grant the personal representative authority to act on behalf of the estate.
Step 5: Administer the Estate
After receiving Letters, the personal representative must:
- Notify creditors and allow the 6-month claim period to run
- Inventory and appraise all estate assets within 60 days
- Pay valid creditor claims and estate expenses
- File federal and state tax returns as needed
- Distribute assets to beneficiaries according to the will or state intestacy laws
- File a final report and petition for discharge to close the estate
Local Requirements
Jefferson County-Specific Procedures
- E-filing: Illinois requires e-filing for most civil cases. You can use an approved Electronic Filing Service Provider (EFSP) like Odyssey eFileIL.
- Local Rules: The Second Judicial Circuit (which includes Jefferson County) may have specific local rules regarding bond requirements and scheduling.
- Publication: Notice to creditors must be published in a newspaper of general circulation within Jefferson County, such as Centralia Morning Sentinel.
- Bond: A surety bond is typically required unless the will waives it or all heirs/legatees agree to waive it (and the court approves).
Timeline & Fees
Filing Fees (Jefferson County)
- Petition for Probate: approximately $300-$400 (fees vary by estate value and specific case type)
- Certified copies of Letters: approximately $10-$20 per copy
- Publication costs: approximately $150-$300 depending on the newspaper
- Claims: Fees may apply for filing claims against the estate
Payment Methods
The Circuit Clerk accepts cash, checks, money orders, and credit/debit cards (convenience fees may apply).
Estimated Timelines
- Simple estates (no disputes, limited assets): 9-12 months (minimum 6 months for creditor claims)
- Average estates: 12-18 months
- Complex or contested estates: 18 months to 2 years or more
The 6-month creditor claim period begins after the first publication of notice, which sets the minimum timeline for closing an estate.
Local Resources
Jefferson County Court Resources
- Court Website: jeffcocircuitclerk.illinois.gov
- Probate Self-Help: Illinois Legal Aid Online
- Illinois Probate Forms: Illinois Courts Standardized Forms
Legal Aid and Attorney Referrals
- Illinois State Bar Association: (800) 252-8908 — isba.org
- Land of Lincoln Legal Aid: (618) 244-0235 — Provides legal assistance to eligible low-income residents.
Publication
- Centralia Morning Sentinel: (618) 242-2400 — Newspaper of general circulation covering Mt. Vernon and Jefferson County.