Knowles Security Inc
Commercial services · Fullerton, California
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Products & Services
About Knowles Security Inc
Our Security Services provide protection through surveillance, access control, risk management, and emergency response, ensuring safety. This profile covers Knowles Security Inc, a company employing 51-100 people, reporting $10M-$25M in annual revenue, classified under Investigation and Security Services, based in Fullerton, California, United States and operating in Office service.
Its primary NAICS classification is 561612 (Security Guards and Patrol Services). Knowles Security Inc is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Phone
- +1 (866) 4044461
- Fax
- +XXX (714) 2429751
- Website
- www.knowlessecurityinc.com
- Address
- 335 S State College Blvd, Fullerton, California, 92831, 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
- 75 (51-100)
- Annual Revenue
- $14.6M ($10M-$25M)
Knowles Security Inc: frequently asked questions
What does Knowles Security Inc do?
Our Security Services provide protection through surveillance, access control, risk management, and emergency response, ensuring safety.
Where is Knowles Security Inc located?
Knowles Security Inc is headquartered at 335 S State College Blvd, Fullerton, California, 92831, United States.
How many employees does Knowles Security Inc have?
Knowles Security Inc has about 75 employees (the 51-100 range).
What is Knowles Security Inc's annual revenue?
Knowles Security Inc's annual revenue is estimated at $14.6M (the $10M-$25M range).
What industry is Knowles Security Inc in?
Knowles Security Inc is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 561612 (Security Guards and Patrol Services).
How can I contact Knowles Security Inc?
Its website is www.knowlessecurityinc.com and its phone number is +1 (866) 4044461.
What companies are similar to Knowles Security Inc?
Other large industrial & mechanical companies in California include State of California, TD SYNNEX Corp, University of California and Ingram Micro Holding Corp.
Largest industrial & mechanical companies in California
Largest companies in California
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Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
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