#1
Benford Protection Group llc
“Instructor Micheal Coates was very professional and friendly. His class was very informative and helpful. I recommend. 10/10” — Google review
Best Security Guard Services in Markham, IL
The 6 best-rated security guard services in Markham, IL average 4.8★ on Google across 712 reviews. E'CLAT Security Group, PLLC. has the top rating (5.0★), and Benford Protection Group llc has the most reviews (335). Updated October 25, 2026.
6 companies that meet our bar: rated 4.5★ or higher on Google, with a meaningful review history (712 reviews combined) and currently operating. Request a call back and the company will phone you directly.
#2
Secureone Security Services
“Fantastic experience getting my TSA Pre Check. After trying 2 times using clear at staples and wasting I kid you not 4+ hours for their inability to honor an appointment or know what they are doing. Immediately…” — Google review
#3
E'CLAT Security Group, PLLC.
“Good class positive people caring had fun doing it didnt get mad if we didn’t understand something chill people💯. Get your license with them.” — Google review
#4
Final Defense Security and Investigations
“Final Defense Security and Investigations provides absolutely top-tier service! As a private security and investigative agency, they truly stand out in the greater Chicagoland area. The team delivers incredibly…” — Google review
#5
Centinel Security Guard Services
“Used Jason and his team for a project we had, and everyone was really helpful to get the project to the finish line. Always in communication to account for last minute changes. I will definitely call them again,…” — Google review
#6
Tribe Security Guard Service
“Tribe Security Guard Service is truly professional and reliable. Their guards are well-trained, punctual, and always alert. We felt completely safe under their watch. Their management is responsive and values client…” — Google review
How we pick security guard services in Markham
We scan Google Maps for security guard company listings in and around Markham, keep only open businesses whose main category matches the service, and require a Google rating of at least 4.5 from at least 20 reviews. Companies are ordered by a confidence-weighted score that balances rating and review volume. We do not accept payment for placement.
Frequently asked questions
Who is the highest-rated security guard company in Markham?
E'CLAT Security Group, PLLC. has the highest Google rating on our Markham list: 5.0 out of 5 from 47 reviews (as of October 25, 2026).
Which security guard company in Markham has the most reviews?
Benford Protection Group llc has the most Google reviews among the companies listed here: 335, with a 4.9★ average.
How are these security guard services chosen?
Only open Markham-area businesses whose Google category matches the service, rated at least 4.5★ from at least 20 Google reviews. They are ordered by a confidence-weighted score of rating and review volume. Placement is never paid.