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Products & Services
About Stt
Click here to read and learn more about STT Security. With 48 years of experience, our security services are second to none. Stt is listed as a company operating in Office service, employing 251-500 people, reporting $10M-$25M in annual revenue, classified under Investigation and Security Services and based in Mount Pleasant, Michigan, United States.
Its primary NAICS classification is 561612 (Security Guards and Patrol Services). Stt is one of 528,309 Industrial & mechanical companies listed in Michigan.
Business Contact Information
- Phone
- +1 (800) 8601788
- Website
- www.sttsecurity.com
- linkedin.com/company/stt-inc
- facebook.com/sttinc
- Address
- 1600 N Mission St, Mount Pleasant, Michigan, 48858, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 56Administrative and Support and Waste Management and Remediation Services
- 5616Investigation and Security Services
- 561612Security Guards and Patrol Services
SIC Codes
- 73Business Services
- 738Miscellaneous Business Services
- 7381Investigation Services
Company Details
- Employees
- 346 (251-500)
- Annual Revenue
- $22.3M ($10M-$25M)
Stt: frequently asked questions
What does Stt do?
Click here to read and learn more about STT Security. With 48 years of experience, our security services are second to none.
Where is Stt located?
Stt is headquartered at 1600 N Mission St, Mount Pleasant, Michigan, 48858, United States.
How many employees does Stt have?
Stt has about 346 employees (the 251-500 range).
What is Stt's annual revenue?
Stt's annual revenue is estimated at $22.3M (the $10M-$25M range).
What industry is Stt in?
Stt is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561612 (Security Guards and Patrol Services).
How can I contact Stt?
Its website is www.sttsecurity.com and its phone number is +1 (800) 8601788.
Largest companies in Michigan
Largest industrial & mechanical companies
Manufacturing sales in Michigan, 2026
In Michigan, Factur's 2026 study counted 81 manufacturing quotes worth $4.7M and 28 purchase orders over 12 months: 35% of quotes became orders, against 21% nationally. See the Michigan data.
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