Lawyers in O'Fallon, IL

16 law firms. Choose a practice area to narrow the list.

Browse law firms in O'Fallon by practice area, confirm the attorney's status through the Illinois ARDC, and contact firms directly.

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Finding a lawyer in O'Fallon

O'Fallon sits in St. Clair County, in the Metro East region across the Mississippi River from St. Louis, Missouri, and cases from the city are heard in the St. Clair County Circuit Court. The city is also home to Scott Air Force Base, which brings a steady mix of active-duty service members, veterans and federal civilian employees into the population alongside the usual range of homeowners and small businesses.

Legal issues people in O'Fallon bring to lawyers

  • Family & Divorce — divorce, allocation of parental responsibilities, parenting time and child support, worked out in St. Clair County's family courts; military families near the base sometimes add questions about deployment schedules and custody.
  • Real Estate — closings, title work and disputes tied to the area's steady home-buying market as families move in and out with the base and the commute into St. Louis.
  • Personal Injury and Car Accident — crash and negligence claims arising on the interstates and local roads that connect O'Fallon to the rest of the metro area.
  • Criminal Defense and DUI & DWI — defense against charges ranging from traffic-related offenses to more serious counts, heard in the St. Clair County Circuit Court.
  • Estate Planning & Probate — wills, trusts, powers of attorney and the probate process for settling an estate, often prompted by a move, a retirement or a change in military orders.
  • Workers' Compensation — job-injury claims pursued through the Illinois Workers' Compensation Commission rather than a regular lawsuit.

Choosing a law firm in O'Fallon

Every Illinois lawyer must be registered with the Attorney Registration and Disciplinary Commission (ARDC); its online lookup shows whether an attorney's status is active and whether there is a public disciplinary record, so check it before you sign anything.

Ask how often the firm appears in the St. Clair County Circuit Court for cases like yours and who at the firm will actually handle your file day to day. If you or a family member is connected to Scott Air Force Base, ask whether the lawyer has worked with active-duty or veteran clients before. Get the fee arrangement — contingency, hourly or flat fee — in writing before any work begins.

Free and low-cost help

Illinois Legal Aid Online publishes plain-language guides and court forms and can point O'Fallon residents to the legal aid organization that serves St. Clair County. The Illinois State Bar Association runs a lawyer referral program that connects callers with a private attorney for a short initial consultation.

For a closer look, see family lawyers in O'Fallon and real estate lawyers in O'Fallon.

Lawyers in Illinois · Nearby: lawyers in Belleville

This page is general information, not legal advice. Laws change and every case is different — talk to a licensed Illinois attorney about your situation.

Updated 2026-10-02.