Our Attorneys

John F. Simpson IV

John F. Simpson IV is a founding partner of Simpson Dattilo, LLC, a boutique law firm providing legal representation and trusted counsel to clients in corporate, administrative, real estate, and estate planning matters from offices in Chicago and Riverside, Illinois. Mr. Simpson focuses his practice on real estate, probate, estate planning, administrative law, criminal defense, and local prosecution. His clients include real estate developers, property managers, executors and trustees, vacation rental companies, transportation companies, and local municipalities. Mr. Simpson also serves as Village Prosecutor for the Village of Willow Springs.

Mr. Simpson has litigated matters in Cook, DuPage, Will, Lake, Kane, Kendall, and Peoria counties. During law school, Mr. Simpson worked for the late, Honorable John W. Darrah, United States District Judge for the Northern District of Illinois. Mr. Simpson is admitted to practice in Illinois, and before the U.S. District Courts for the Northern and Central Districts of Illinois.


Mr. Simpson gives back his time serving on the Illinois Supreme Court Committee on Character & Fitness, and mentoring and advising undergraduates attending his alma matter, Bradley University. He also enjoys memberships in the Chicago Bar Association, Illinois State Bar Association, Justinian Society of Lawyers, and Union League Club of Chicago.


J.D. from The John Marshall University, and B.S. from Bradley University with majors in political science, criminal justice administration and sociology.

Contact John

Email: john@simpsondattilo.com

Phone: (630)442-1896 ext. 1

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(312) 416-1953

5559 S. Archer Avenue
Suite 3
Chicago, IL 60638


(502) 554-9047

10620 Meeting Street
Suite 101
Prospect, KY 40059


(630) 442-1896

3416 Harlem Avenue
Riverside, IL 60546