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Best Private Investigators near Waukegan, IL
3 of these agencies are based in Waukegan; the others serve Waukegan from towns including Evanston (24 mi), Kenosha, WI (15 mi) and Arlington Heights (20 mi).
7 open 24/7 · 17 open weekends · 18 rated 4.5+ · 9 show a license
Data verified October 18, 2026
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A-1 Detective Agency
- Communication
- Information
- Invoice
“Within three minutes (no joke) of having all the documents and information, Darryl sent me a message stating he had an appointment set up to serve the paperwork the next day.”
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Interfacts
“Prior to using Inter-Facts, other firms I worked with could provide some information, but weren't as professional.”
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Scoutlogic Pre-Employment Background Screening
- Questions
- Responsive
- Background Check
“Scout Logic has truly been great to work with, we had started working with a new client and we needed background checks immediately and once I spoke with Chip we were up & running in no time.”
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3 Kings Private Security
- Vehicle
“Had what seemed to me small issue no Heat, but 3kings ~ Excellent~ All happened few days ago but while riding as passenger from heat to no Heat~ He went to auto place of purchase couldn't get in and after a few calls.”
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Firefly Investigations
“I'm more than happy with the results I received and to be honest it was 100% more than anticipated!”
The 24 agencies on this page are the private investigators listed for Waukegan, 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: Waukegan, IL
20 of the 24 agencies on this page have a rating, from 4.0 to 5.0 across 318 reviews; 1 has 50 or more reviews and 18 are rated 4.5 or higher. 7 are open around the clock; 17 are open on Saturdays and 11 on Sundays. The services the agencies on this page list most often on their websites are surveillance (5), background investigations (3), criminal investigations (3), insurance investigation (3) and assets locating (2). 9 show a license on their websites and 1 has a BBB rating of A or A+. Domain records put 15 websites of the agencies on this page at ten or more years old; the oldest dates from 1997. 7 offer urgent consultations; 4 offer a free initial consultation; 2 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 24 of the agencies on this page; 19 publish a contact page and 13 list a public email. 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.
Why are investigation agencies outside Waukegan shown here?
3 of the 24 agencies have an address in Waukegan. The others come from other towns. Investigators travel to the subject, so an office one county over is rarely the issue. State licensing is the thing to check.
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H Brown Investigations
“Harry brown is the most effective investigator i have ever dealt with in all the years of my criminal law practice.”
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The All-Investigations Group
“If you are looking for professional, compassionate, and urgent attention to your matter, The All-Investigations Group is an excellent choice!”
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Carlson Investigations
- Sheriff
- Case
- Communication
“William Carlson, was the process server we just recently used to serve one of our tenants that we have tried to serve numerous times before we came across his office.”
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Special Solutions
“Very satisfied with there professional expertise.”
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Reyes World Security and Investigations
“Almost comical, however, getting annoyed and have to live a safe life.”
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Blue Star Security
- Officer
“I have worked with several security vendors throughout my career in luxury retail, and no vendor comes close to the professionalism and caliber of officers provided by Blue Star Security.”
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Foresight Investigative Services
“Great investigative work, appreciate the two times I've come to you for answers you did not disappoint.”
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Hogan Investigative Services
“Great communication and customer service!”
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Chicago PI Services Group
“I might work with them one day!”
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Detectives.com
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Culper
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Hibernian Strategic Solutions
“Our law firm has used Hibernian numerous times for service of process and investigative work.”
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Millennium Investigations
“I pleasure to deal with.”
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Ginss
“Excellent service and communication.”
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Detective.com
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SCS & Associates
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강효흔 공인 탐정 Bruce Kang LPD
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American Sentinel
Private Detective Services in Waukegan, IL Cost Estimates
Minimum cost
$343
Maximum cost
$10839
National Average
$1370
Avg Per Hour Rates
$143
$799
$2282
Average price range is based on 471 cost profiles
Why these companies made our list
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