Professional Security Guard Services in Chicagoland, Illinois

Trusted and Experienced

Serving Illinois for Over 50 Years

Our professionally trained security guards are available 24/7 across the Chicago suburbs. Call now to request a FREE QUOTE and discover how we can help protect your people and property.

Chicagoland Security Guard Services

STT Security is a trusted provider of professional security guard services throughout the Chicago metropolitan area, including suburbs like Naperville, Schaumburg, Oak Brook, and Evanston.

With more than 25 years of experience, we’ve partnered with Chicagoland businesses, educational institutions, healthcare facilities, and industrial operations to provide responsive, reliable, and highly personalized security services. Our mission is simple: deliver peace of mind with well-trained security officers and hands-on local supervision.

Not all security companies are the same — STT stands out with a commitment to service excellence and tailored protection. Whether it’s preventing theft at a retail store, maintaining a safe campus environment, or protecting critical infrastructure, we’re here to ensure your operations run safely and securely. In the Chicago suburbs, your safety is our top priority.

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Why Choose STT Security in Chicagoland?



Real-Time, Data-Driven Security Oversight

Our cloud-based reporting platform provides 24/7 access to verified GPS/NFC patrols, photo/video incident reports, and site analytics — all in real time.



Highly Trained, Vetted Security Officers

Every STT security officer completes rigorous training, background checks, drug testing, and ongoing education. We tailor our guards to match your specific industry and site requirements.



Fully Licensed, Insured & Bonded in Illinois

We carry a $5 million liability policy and are fully licensed to operate across Illinois, including the Chicago suburbs. You can trust our professional standards and compliance.

Delivering Professional, Reliable, and Transparent Security Solutions

Top-Rated Security Guard Company in the Chicago Suburbs

Professional, Reliable, Transparent Security Solutions

PDaily Digital Activity Reports Delivered by Email
PCustom Site Security SOPs
P24/7 Report Access via Cloud Portal
POfficers Selected Based on Your Unique Needs
PStreamlined Service Implementation & Onboarding
PCompetitive, Transparent Quotes
PElectronically Verified Patrol Rounds
PDirect 24/7 Access to Local Management
PRegularly Scheduled Virtual & On-Site Check-ins
PDetailed, Easy-to-Audit Electronic Billing

Call Now: 866-665-2456

Get a Custom Quote for

Security Guard Services in Chicagoland, IL

When you choose STT Security, you’re not just hiring an officer — you’re gaining a security partner backed by decades of experience, responsive local support, and a reputation for professionalism.

Call Now: 866-665-2456

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Testimonials

What Our Clients Say About Us

Michelle C.
				I contacted STT Security today to help me out with a security issue for my father's estate. Calvin was incredibly helpful and prompt in getting me the information that I needed. He was very professional and I would recommend this company if you need some security assistance.			
Cathy S.
				Responsibility is not a problem, they are reliable, honest men and women the Mt. Pleasant, MI Staff did a knock-out job on the Coleman Mi Concert and the Midland PGA Golf Tournament, these fine women and men always, besides security, ask what else can they do to accommodate their clients.			
Sara J.
				We have worked with STT for a number of years to provide security for a large community festival. We have been impressed with the customer service, which for us has included last minute additions of officers and overnight security. We have been very impressed with the management and administrative staff in particular.			
Erika A.
				Impressive agency that provides everything my business needs. From background checks to over-night / on-site security for all of our buildings, they have always treated our small business with integrity and professionalism. Staff is easy to work with and all of my questions and concerns have been addressed in a timely manner.			
Deborah W.
				STT returned my call within 15 min after I left a message at midnight when it was after hours for them.They provided excellent consult at no charge and stood by as I navigated a challenging situation. They continued to reach out the next day to be sure it was resolved. Very prompt and professional service. I would highly recommend STT!!			
Ashley R.
				STT Security began working for Dover Hills Apartments about 2 weeks ago and thus far, we are very satisfied! We appreciate the wonderful customer service, attention to detail, and the added security you provide to us and our residents. Keep up the great work! Ashley R. | DHA Manager			

Professional Affiliations

Industry-Specific Security Solutions in the Chicago Suburbs

Different industries have unique security needs. STT has extensive experience serving sectors including:

Healthcare Facilities: Delivering security solutions for hospitals, clinics, and healthcare centers to ensure the protection of patients, staff, and visitors.
Educational Institutions: Promoting safe learning environments at universities, colleges, and local schools through campus-wide safety measures.
Manufacturing & Industrial Facilities: Providing security services for factories, production facilities, and industrial plants to protect assets and maintain uninterrupted operations.
Retail & Shopping Centers: Enhancing safety and theft prevention in shopping malls, retail complexes, and storefronts with high public traffic.
Office Buildings & Professional Services: Securing business environments such as legal offices, financial institutions, and professional service providers.
Construction Sites: Offering comprehensive protection for construction zones by safeguarding equipment, materials, and personnel throughout each phase of development.

Our guards are trained in industry-specific protocols and understand the nuances of the environments they serve. We work closely with our clients to create customized, high-performing security programs that support their operations from day one.

Shopping Around? Here Are Smart Questions to Ask Any Security Vendor

PWill the company visit your site before proposing a solution?
PDo they offer wage transparency and custom compensation plans?
PCan they provide references from current and past clients?
PIs the vendor licensed and insured in Illinois?
PDo they have local management presence and response capability?
PHave they worked with businesses in your specific industry?
PAre they financially stable and free of legal complications?
PCan they name your business as an additional insured?

STT Security is proud to meet all these criteria. We’ve built our Chicagoland presence on reliability, transparency, and unmatched service.

Cities Served in the Chicagoland Area

Addison
Arlington Heights
Aurora
Berwyn
Bolingbrook
Calumet City

Cicero
Des Plaines
Elgin
Elmhurst
Evanston
Gary

Glenview
Hammond
Joliet
Kenosha
Melrose Park
Mount Prospect

Naperville
Oak Lawn
Oak Park
Orland Park
Palatine
Park Ridge

Plainfield
Schaumburg
Skokie
Tinley Park
Waukegan
Wheaton