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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.”
Best Private Investigators near Wheaton, IL
These agencies serve Wheaton from nearby bases in towns including Naperville, Park Ridge and Westmont.
24 agencies listed · 2 open 24/7 · 7 open weekends · 17 rated 4.5+ · 8 show a license
Data verified October 18, 2026
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Marshall Investigative Group
“The best”
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Foresight Investigative Services
“Robert provided exceptional, confidential professional service for my case .”
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Great Lakes Professional Investigations
“I have had the pleasure of knowing Jacob and GLPI for almost a decade and to see the passion that he has for the work he does; in the industry is a huge positive in my book.”
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Forest Security
- Home
- DIY
- Job
“The owner Jay helped me deal with a contract I had with ADT, the techs were super professional and knowledgeable, and everyone in the office is very friendly.”
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RM Global Security Consultants
“RM Global Security did a fantastic on my security job.”
The 24 agencies on this page are the private investigators listed for Wheaton, 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: Wheaton, IL
19 of the 24 agencies on this page have a rating, from 3.8 to 5.0 across 100 reviews; 17 are rated 4.5 or higher. 2 are open around the clock; 7 are open on Saturdays and 4 on Sundays. 8 show a license on their websites and 1 has a BBB rating of A or A+. Domain records put 14 websites of the agencies on this page at ten or more years old; the oldest dates from 1997. 2 offer urgent consultations and 3 offer a free initial consultation. We have a website on file for 22 of the agencies on this page; 16 publish a contact page; 12 list a public email and 1 takes bookings online. We count these figures across the agencies on this page; hours and prices change, so confirm the details with the agency before you book.
Do investigators listed for Wheaton discuss a case free?
3 of the 24 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.
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Krimson Investigations and Process Service
- Prices
- Company
- Sheriff
“The staff was prompt, kept me abreast of each step in the process and fees were the best I'd paid for similar service (with another server) in the last year.”
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Edward R Kirby & Associates
“They are honest as the day is long and they will give it their all to solve your problem.”
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Larsen Forensics
“NOTICE. As of June 30, 2022, Larsen Forensics & Associates, Inc. will be closed after more than a decade in business. All client inquires will be referred to trusted long-time Larsen Forensics Associate”
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Culper
“The Culper Spy Ring was the first American intelligence organization during the American Revolutionary War. It was organized in 1778 by Major Benjamin Tallmadge per request of General George Washington and operated on Long Island and New York City. T...”
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Millennium Investigations
“I highly recommend.”
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Squad 8-B Solutions
“You have all the mutual respect”
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Judicial Attorney Services
“Of course, there are times when the subject becomes uncooperative and service cannot be made, but I love that this company gives you the flexibility to go out whenever you can to get the job done right which in turn, increases the chance of your work...”
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Argus Services
“Unlike most of our similar competition, Argus Services specializes their investigative services for corporate America, ensuring the utmost competence and skill for our clients.”
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Chicago Loss Prevention Group
“At Chicago Loss Prevention Group, LTD. we have earned our reputation for quality by providing real value in the real world. There is no magic in the security business; superior service is more expensive than inferior service. Though a higher paid, mo...”
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Impact Investigations
“Investigative Surveillance can be used in association with missing persons, insurance fraud, theft and vandalism, or determining if a parent is fit to have child custody or visitation rights to proving marital infidelity.”
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Capital Security & Investigations
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Viper Detective Agency
“Sally keeps you updated throughout the process.”
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VTS Investigations
“Blue 22, LLC, formerly known as VTS Investigations, is a Chicago based private detective, security and process serving agency. Our experienced private detectives and associates utilize the latest technology to complete each investigation with accurac...”
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Force Process Serving & Investigations
“Hunting Down the Hardest for you.”
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Cash Private Detectives
“There are 328 million people in America, and an estimated 58 billion in unclaimed assets in the digitized database. There are even more sitting in warehouses in boxes. In 2018 the state of Illinois spent 4 million on 12 warehouses just to store paper...”
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Delorto Mazzola & Associates
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Addition Technology
“Intacs Corneal Implants are a minimally invasive surgical option for individuals with keratoconus who are experiencing intolerance to contact lens and are facing a corneal transplant. Intacs Corneal Implants may be the best possible option to stabili...”
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American Sentinel
“American Sentinel is founded on the principles of truth, honor, and integrity. The sentinel is a watchman, a guardian, and soldier whose discipline and mindful eye keep those they protect safe. We live these values and use it to guide us through our ...”
Private Detective Services in Wheaton, IL Cost Estimates
Minimum cost
$311
Maximum cost
$9843
National Average
$1244
Avg Per Hour Rates
$130
$726
$2073
Typical price range is based on 503 cost profiles
Why these companies made our list
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