Security Services companies in United States

3,872 Security Services companies in United States — with websites, cities, size and what they do. Free to browse, filter and export; no subscription.

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1. Stanley Security Indianapolis · United States · 1K–5K employees
   Stanley Security is a leading provider of comprehensive security solutions, offering a wide range of products and services designed to protect people, property, and assets. With…
2. Securitas Security Services Usa, Inc. Parsippany · United States · 5K–10K employees
   Securitas Security Services USA, Inc. is a leading provider of security services in the United States, offering a wide range of security solutions tailored to meet the needs of…
3. Constellis Triple Canopy Reston · United States · 1K–5K employees
   Constellis Triple Canopy is a leading provider of security and risk management services. The company specializes in delivering comprehensive security solutions to government and…
4. Coat Of Armour Security Philadelphia · United States · 1K–5K employees
   Coat Of Armour Security is a leading provider of security services in the United States, specializing in a wide range of security solutions tailored to meet the needs of various…
5. Securitas Security Service Usa Honolulu · United States · 1K–5K employees
   Securitas Security Service USA is a leading provider of security services in the United States, specializing in a range of security solutions tailored to meet the needs of…
6. Sciath Security, Llc San Antonio · United States · 1K–5K employees
   Sciath Security, LLC is a leading provider of security solutions, specializing in comprehensive risk management and security services for various sectors. The company focuses on…
7. Whelan Security St. Louis · United States · 201–500 employees
   Whelan Security is a leading provider of security services in the United States, specializing in comprehensive security solutions tailored to meet the unique needs of various…
8. S1 Security Group Inc. Doral · United States · 201–500 employees
   S1 Security Group Inc. is a leading provider of security solutions, specializing in advanced technology and integrated security systems. The company focuses on delivering…
9. Premier Security And Premier Events (Utah) West Valley City · United States · 201–500 employees
   Premier Security and Premier Events is a leading provider of security services and event management solutions in Utah. The company specializes in offering comprehensive security…
10. Pabc Corporate Security Solutions Los Angeles · United States · 201–500 employees
    Pabc Corporate Security Solutions is a leading provider of comprehensive security services, specializing in risk management, security consulting, and technology integration.…
11. Meridian Security United States · 51–200 employees
    Meridian Security is a leading provider of security solutions, specializing in comprehensive security services for both residential and commercial clients. The company offers a…
12. Tactical Mission Group United States · 51–200 employees
    Tactical Mission Group is a specialized organization focused on providing advanced training and consulting services for military, law enforcement, and security personnel. The…
13. Carolina Custom Security United States · 51–200 employees
    Carolina Custom Security is a leading provider of security solutions based in the United States. The company specializes in designing, installing, and monitoring security systems…
14. American Executive Security United States · 51–200 employees
    American Executive Security is a leading provider of security services in the United States, specializing in comprehensive security solutions for businesses, events, and…
15. Paragon Investigations & Security Services United States · 51–200 employees
    Paragon Investigations & Security Services is a comprehensive security solutions provider specializing in a wide range of services including private investigations, security…
16. Hoffman Security Solutions United States · 51–200 employees
    Hoffman Security Solutions is a leading provider of comprehensive security services and solutions, specializing in the design, installation, and maintenance of advanced security…
17. Alarmas De Ponce Inc Ponce · United States · 51–200 employees
    Alarmas De Ponce Inc is a security solutions provider based in the United States, specializing in alarm systems and monitoring services. The company offers a range of products…
18. Nationwide Alarms Fall River · United States · 51–200 employees
    Nationwide Alarms is a security solutions provider based in Fall River, Massachusetts. The company specializes in offering a range of security services including alarm systems…
19. Ace Security & Investigations Brownsville · United States · 51–200 employees
    Ace Security & Investigations is a leading provider of security services and investigative solutions based in Brownsville, Texas. The company specializes in offering a wide range…
20. Guard West Security Services San Diego · United States · 51–200 employees
    Guard West Security Services is a leading provider of security solutions based in San Diego, California. Established to meet the growing demand for safety and security in various…
21. Msa Seguridad Buenos Aires · United States · 51–200 employees
    Msa Seguridad is a leading provider of security solutions in Argentina, specializing in comprehensive security services including monitoring, alarm systems, and personal…
22. Star Pro Security Patrol Inc Irvine · United States · 51–200 employees
    Star Pro Security Patrol Inc is a leading provider of security services in the United States, specializing in a wide range of security solutions tailored to meet the needs of…
23. Canfield And Associates Lakeside · United States · 51–200 employees
    Canfield And Associates is a professional services firm specializing in security solutions and alarm systems. The company focuses on providing high-quality security services…
24. Las Vegas Security Las Vegas · United States · 51–200 employees
    Las Vegas Security is a prominent security services provider based in Las Vegas, Nevada. The company specializes in offering a wide range of security solutions tailored to meet…
25. Hk Security Services Las Vegas · United States · 51–200 employees
    Hk Security Services is a prominent security solutions provider based in Las Vegas, Nevada. The company specializes in offering a wide range of security services tailored to meet…
26. Crisis24 Washington, D.C. · United States · 51–200 employees
    Crisis24 is a global risk management firm that provides comprehensive security solutions to businesses and organizations. The company specializes in risk assessment, crisis…
27. Metro Dade Security Systems, Inc. Miami · United States · 51–200 employees
    Metro Dade Security Systems, Inc. is a leading provider of security solutions based in the United States. The company specializes in offering a wide range of security services…
28. Cleveland Corporate Protection Services Cleveland · United States · 51–200 employees
    Cleveland Corporate Protection Services is a leading provider of security solutions, specializing in corporate security, event security, and personal protection services. With a…
29. Spectrum Security Services, Inc. Jamul · United States · 51–200 employees
    Spectrum Security Services, Inc. is a leading provider of security solutions in the United States, specializing in detention services and security management. The company offers…
30. Fenix Security Services Cape Coral · United States · 51–200 employees
    Fenix Security Services is a leading provider of security solutions in the United States, specializing in a range of services designed to protect people, property, and assets.…
31. Quick Reaction Security Services Los Angeles · United States · 51–200 employees
    Quick Reaction Security Services is a security firm based in the United States that specializes in providing comprehensive security solutions for various sectors. The company…
32. Verintegra Security & Investigations Austin · United States · 51–200 employees
    Verintegra Security & Investigations is a leading provider of security and investigative services based in Austin, Texas. The company specializes in a range of services including…
33. Texas Veteran Security Llc San Antonio · United States · 51–200 employees
    Texas Veteran Security LLC is a security services provider based in San Antonio, Texas. The company specializes in offering a range of security solutions, including armed and…
34. Mack Security Group New York · United States · 51–200 employees
    Mack Security Group is a leading provider of security services in the United States, specializing in comprehensive security solutions for both residential and commercial clients.…
35. Olgoonik Global Security, Llc Anchorage · United States · 51–200 employees
    Olgoonik Global Security, LLC is a leading provider of security services and solutions, specializing in a range of sectors including government, commercial, and industrial…
36. Dependable Private Security Inc Van Nuys · United States · 51–200 employees
    Dependable Private Security Inc is a security services provider based in Van Nuys, California. The company specializes in offering a range of security solutions including armed…
37. Metro Cleveland Security Cleveland · United States · 51–200 employees
    Metro Cleveland Security is a leading provider of security services in the Cleveland area, specializing in a range of security solutions tailored to meet the needs of businesses…
38. Delta Five Security, Llc Miami · United States · 51–200 employees
    Delta Five Security, LLC is a security services provider specializing in comprehensive security solutions for both residential and commercial clients. The company offers a range…
39. Vigil Falcon Security Services Los Angeles · United States
    Vigil Falcon Security Services is a leading provider of comprehensive security solutions, specializing in various sectors including corporate security, event security, and…
40. Adtsecurity Boca Raton · United States
    ADT Security Services is a leading provider of security and automation solutions for homes and businesses. With a focus on innovative technology and customer service, ADT offers…
41. Allied Universal Corporation Miami · United States
    Allied Universal Corporation is a leading provider of security services and solutions, specializing in integrated security systems and personnel. The company operates across…
42. Sons Security L.L.C. Bellevue · United States · 11–50 employees
    Sons Security L.L.C. is a security services provider based in Bellevue, United States. The company specializes in offering a range of security solutions including armed and…
43. Federal Protection Agency Llc Highlands Ranch · United States · 11–50 employees
    Federal Protection Agency LLC is a security services company based in Highlands Ranch, Colorado. The company specializes in providing comprehensive security solutions, including…
44. Coast Lock & Key Monterey · United States · 11–50 employees
    Coast Lock & Key is a locksmith service provider based in Monterey, California, specializing in residential, commercial, and automotive locksmith solutions. The company offers a…
45. Alameda Locksmith Alameda · United States · 11–50 employees
    Alameda Locksmith is a professional locksmith service based in Alameda, California, specializing in a wide range of locksmith solutions for residential, commercial, and…
46. Sentry Security Service Del Rio · United States · 11–50 employees
    Sentry Security Service is a security company based in Del Rio, Texas, specializing in providing comprehensive security solutions for both residential and commercial clients. The…
47. Central Polygraph Service, Ltd. Northfield · United States · 11–50 employees
    Central Polygraph Service, Ltd. is a leading provider of polygraph testing services in the United States. Established to offer professional and reliable polygraph examinations…
48. Pro-Tection Seattle, Inc. Kent · United States · 11–50 employees
    Pro-Tection Seattle, Inc. is a specialized provider of protective services and solutions based in Kent, Washington. The company focuses on delivering high-quality security…
49. Alert Alarm, Inc. Merrillville · United States · 11–50 employees
    Alert Alarm, Inc. is a security systems provider based in Merrillville, Indiana, specializing in the installation and monitoring of alarm systems for residential and commercial…
50. Secure Facility Corporation Hanover · United States · 11–50 employees
    Secure Facility Corporation specializes in providing advanced security solutions and facility management services to a diverse range of clients, including government agencies…