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Products & Services
About Key Systems
Key Systems is a company based in Carol Stream, Illinois, United States, operating in Office service, employing 11-20 people, reporting $1M-$5M in annual revenue and classified under Investigation and Security Services.
Its primary NAICS classification is 561621 (Security Systems Services (except Locksmiths)). Key Systems is one of 508,039 Industrial & mechanical companies listed in Illinois.
Business Contact Information
- Phone
- +1 (630) 6655730
- Address
- 350 Randy Rd, Carol Stream, Illinois, 60188, 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
- 561621Security Systems Services (except Locksmiths)
SIC Codes
- 73Business Services
- 738Miscellaneous Business Services
- 7382Security Systems Services (Except Locksmiths)
Company Details
- Employees
- 17 (11-20)
- Annual Revenue
- $1.9M ($1M-$5M)
Key Systems: frequently asked questions
What does Key Systems do?
Key Systems is a company based in Carol Stream, Illinois, United States, operating in Office service, employing 11-20 people, reporting $1M-$5M in annual revenue and classified under Investigation and Security Services.
Where is Key Systems located?
Key Systems is headquartered at 350 Randy Rd, Carol Stream, Illinois, 60188, United States.
How many employees does Key Systems have?
Key Systems has about 17 employees (the 11-20 range).
What is Key Systems's annual revenue?
Key Systems's annual revenue is estimated at $1.9M (the $1M-$5M range).
What industry is Key Systems in?
Key Systems is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561621 (Security Systems Services (except Locksmiths)).
How can I contact Key Systems?
Its phone number is +1 (630) 6655730.
Largest companies in Illinois
Largest industrial & mechanical companies
Manufacturing sales in Illinois, 2026
In Illinois, Factur's 2026 study counted 74 manufacturing quotes worth $11.8M and 14 purchase orders over 12 months: 19% of quotes became orders, against 21% nationally. See the Illinois data.
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