Following are private investigators and investigation agencies in the state of Illinois. Before hiring a detective or agency in Illinois, contact the appropriate state licensing authority to confirm current license information. To verify a license for the state, please contact:
Illinois Department of Financial & Professional Regulation
320 West Washington Street, 3rd Floor
Springfield, IL 62786
Hire a Private Investigator in Illinois
The following list of private eyes is in alphabetical order and is by no means a ranking. We encourage you to evaluate each P.I.’s services and select the most appropriate provider based on your individual needs. Take the time to review the agency’s website (if available) and call several different companies to ask questions and get price quotes. To learn more about hiring a professional PI firm near you, and get more details on the costs involved, read our article Tips for hiring a P.I.
Sign up today for the Illinois P.I. Directory.
All County Investigations, Inc.
P.I. License # 117-001697
Capital Security & Investigations
Private Investigations (Insurance fraud, Domestic and Criminal), Process Service, Mystery Shopping Service, Back Ground Checks, Security Guard Contractor.
Member of the American Society of Industrial Security (ASIS), National Association of Professional Process Servers (NAPPS).
Licensed in the following States:
IL Guard #122-000781
IL Private Investigator # 117-001004
CA PI # 24898
WI Guard & PI # 16483-062
ICS of Illinois
Owner – Ben Lopez
112 S. Sangamon St. Chicago, Illinois 60607
Telephone – (773) 368-3976
FAX – (773) 924-1778
ICS of Illinois provides a full range of private investigations in Illinois. The corporate headquarters for ICS of Illinois are located in Chicago, Illinois, and all investigations are performed by licensed Illinois private investigators. Our investigators are committed to providing affordable, reliable service in your area and reporting their results in a timely, accountable manner. Contact us today to begin your case. ICS of Illinois is a private detective agency owned and operated by Ben Lopez. IL License # 117-001526
Independent Investigations LLC
We offer the following types of investigations: Cheating Spouses, Bug Sweeps, Workers’ Compensation Fraud, Workplace Violence, Stalking, Executive protection, Security Surveys, and various other Criminal and Civil Investigations. The owner, David C. Hoover, has investigative experience at the local, state and federal level. While employed by the Diplomatic Security Service, under the U.S. State Department, he conducted numerous protective details for visiting heads of state and other dignitaries. He has had over 1,513 hours of documented specialty training in the field. At Independent Investigations LLC, we see what others miss!
Illinois Agency License #117-001425, Illinois Individual License #115-002052
Investigative Support Unit
Our agency is a Full-Service investigation firm providing services to a variety of clientele including law firms, corporations, government agencies, insurance companies, third-party administrators, and private individuals. Our mission is to provide our clients with the most accurate information possible. Our investigators are experienced professionals who undergo extensive training in order to provide our clients with the highest quality service. We are headquartered outside of Chicago and in South Bend, Indiana. Contact us today for a free consultation.
(Indiana License # PI20700089-Illinois License # 115002167)
Lawrence Ryan Investigations, Inc.
Private Investigator License Number: 117.001716
Description of Services:
For over 35 years, LRI has been building its reputation as one of the most effective private investigators in Illinois. Whether it’s a missing person, domestic case, corporate investigation, or serving process, our investigator have the skills and experience to get the job done.
In addition, by leveraging technology and our extensive network of resources, we are able to support investigations internationally.
Investigators have an array of tools available to solve your problem.
Reputable private investigators will work to find the most cost-effective solution to accomplish your goals.
Find Assets for Companies and Individuals
Confirm an Individual’s Background.
Know when and where a person is going.
Get in-person insight and confirmation.
HIRING A PRIVATE INVESTIGATOR
Our goal while you are here is to provide you with the information you need to make the best decision possible. Hiring a private investigator does not need to be a source of stress and anxiety.
When you are ready, give us a call for a confidential assessment. After we understand your needs and are confident we can help you, we’ll explain exactly how we can help and the costs involved.
We are here and ready to help twenty-four hours a day.
Get answers to common questions:
How much does it cost for a private investigator?
How does a private investigator find people?
Is the information admissible in court?
What can a private investigator do that I can’t?
Call today for a free consultation. Check our reviews on BBB and Thumbtack.
Mid-West Protective Service
A full service agency providing unmatched services to individuals, attorneys, insurance companies, corporations, and government. Services are professional and confidential. When you need the truth – We provide the facts ! Illinois License # 117-001006.
Special Solutions, LTD.
The foundation of Special Solution’s Investigative Services Division is unparalleled in the industry, leading the way in experience, quality, integrity and above all, we are sensitive to the needs of our clients. Our investigative consultants are former military, federal, state and local law enforcement officers with a broad array of experience, most with over 20 years experience in the investigative field. We still believe in old fashion investigation work, while promoting a modern approach in rendering straight forward answers without excuses. We still believe in hand shakes and direct promises based upon our “word.”
Call us today for FREE investigative consultation.
Illinois # 117-1169 License
Conducting investigations since 1990. Licensed in Illinois and California. Specialize in criminal defense and civil investigations, worldwide protective services and security consulting, international records research and investigations with a specialty in Latin America.
Charter member, United States Association of Professional Investigators (USAPI)
Board Certified in Security Management – ASIS International (CPP)
Member – International Law Enforcement Educators & Trainers Association
Member – UNA – USA United Nations Association of America
Illinois Private Detective Agency 117-001578
VTS Investigations, LLC
Serving the Chicago metro area since 1980.Surveillance, witness interviews, video camera installations, missing persons, eavesdropping sweeps. Former Law Enforcement.
Wicklander-Zulawski and Associates
Wicklander-Zulawski and Associates, Inc. is a nationally recognized firm established in 1982. The company provides Loss Prevention, Consulting, Interview, and Investigative services to the public and private sector. Wicklander-Zulawski and Associates are much sought after trainers in Interview and Interrogation techniques. Their programs have been acclaimed by thousands of public and private professionals across the country.
List of Counties in Illinois
Adams County, Alexander, Bond, Boone, Brown, Bureau, Calhoun, Carroll, Cass, Champaign, Christian, Clark, Clay, Clinton, Coles, Cook, Crawford, Cumberland, DeKalb, De Witt, Douglas, DuPage, Edgar, Edwards, Effingham, Fayette, Ford, Franklin, Fulton, Gallatin, Greene, Grundy, Hamilton, Hancock, Hardin, Henderson, Henry, Iroquois, Jackson, Jasper, Jefferson, Jersey, Jo Daviess, Johnson, Kane, Kankakee, Kendall, Knox, Lake, La Salle, Lawrence, Lee, Livingston, Logan, McDonough, McHenry, McLean, Macon, Macoupin, Madison, Marion, Marshall, Mason, Massac, Menard, Mercer, Monroe, Montgomery, Morgan, Moultrie, Ogle, Peoria, Perry, Piatt, Pike, Pope, Pulaski, Putnam, Randolph, Richland, Rock Island, St. Clair, Saline, Sangamon, Schuyler, Scott, Shelby, Stark, Stephenson, Tazewell, Union, Vermilion, Wabash, Warren, Washington, Wayne, White, Whiteside, Will, Williamson, Winnebago, and Woodford county.