Best Private Investigators near Cicero, IL
1 of these agencies is based in Cicero; the others serve Cicero from Chicago (4 mi), River Forest (4 mi) and River Grove (7 mi).
6 open 24/7 · 12 open weekends · 13 rated 4.5+ · 7 show a license
Data verified October 21, 2026
Northshore Process Service Network
“We have been using Northshore for a while now and they are always professional, friendly and helpful.”
RA Private Investigation & Security
“Excellent service and a private investigator who really puts in the diligence for his clients.”
Usia Private Security
“I am very pleased with the cooperation, this company has become a reliable partner for me.”
Confidential Protective Services
“Needed a summons delivered within a short time frame, recipient was avoidant, but CPS got it done.”
PCI Investigations
“I would recommend it to anyone needing a PI whatever your case may be!”
The 15 agencies on this page are the private investigators listed for Cicero, IL. What each one states about its license, its specialties and the areas it covers comes from its own website; ratings and quotes come from public reviews.
Area overview: Cicero, IL
The 15 agencies on this page are rated from 4.0 to 5.0 across 290 reviews; 1 has 50 or more reviews and 13 are rated 4.5 or higher. 6 are open around the clock; 12 are open on Saturdays and 9 on Sundays. 7 show a license on their websites and 2 have a BBB rating of A or A+. Domain records put 12 websites of the agencies on this page at ten or more years old; the oldest dates from 1998. 6 offer urgent consultations and 6 offer a free initial consultation. We have a website on file for all 15 of the agencies on this page; 13 publish a contact page; 11 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; distances are straight-line, and hours and prices change, so confirm the details with the agency before you book.
Do investigators listed for Cicero discuss a case free?
6 of the 15 agencies state that a first consultation costs nothing. Use it to describe the problem and hear whether the work can be done lawfully at all. A straight agency will sometimes tell you on that call that what you want cannot be obtained, which saves you a retainer.
Chicago Executive Protection - Secure Options Consulting
“Their responsiveness and adaptability have surpassed our expectations, and we wholeheartedly recommend Secure Options Consulting for top-tier security solutions.”
U.S. Security and Protective Services
“Very professional place well structured i recommend them for their services!!!!”
Key Chicago Private Investigators
“Jeanne was very thoughtful in her preliminary questioning and then did a great job setting up a strategic plan of action; with excellent follow-through and timely updates.”
Vantius
“I had an urgent situation that was dealt with immediately and with excellent customer service.”
Forest Security
“Thank you also to everyone in the office who does an outstanding job no matter how small the account”
Myers Service
“I spoke to Nerdisa and she was knowledgeable and gracious in answering all of my questions and I had many.”
Heritage Investigations & Surveillance
“Definitely will do everything they can to get the job done.”
Chicago Private Investigator
“From interviewing witnesses to getting documents, police reports, medical records, (and anything else), Bob always comes through very quickly.”
Ingenium Consulting Group
“Called Ingenium the took care of all the problems.”
Why these companies made our list
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