Company lists · Data refreshed September 2026
Top 25 Facility security management based in the United States
RevenueBase identified 2,177 facility security management headquartered in the United States as of September 2026 and tracks 176,949 professional contacts across them, including 16,172 with verified work emails and 52,829 with mobile numbers. New York is the largest hub.
This list covers facility security management headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 2, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest facility security management based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 62,715 | ||||
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | 38,650 | ||||
“Securitas knows Security.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,600 | ||||
“U.S.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,265 | ||||
“Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,167 | ||||
“Through an ISO® 9001:2015 Certified Quality Management System (QMS), Walden Security has earned an award-winning reputation for business excellence and employee satisfaction…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,022 | ||||
“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,946 | ||||
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,728 | ||||
“HSS is now Tarian!” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,438 | ||||
“Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,375 | ||||
“Guardsmark, LLC provides security services.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,186 | ||||
“DSI Security Services offers armed and unarmed uniformed security guard services.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,148 | ||||
“SOS Security is a known innovator and leader in the security and protective services industry.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,133 | ||||
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,057 | ||||
“Founded in 1982, St.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,047 | ||||
“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | 920 | ||||
“As an established mid-market company, clients throughout the country entrust us as the best-qualified firm to protect their highest-value assets – while delivering the quality…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 846 | ||||
“Securitas knows Security.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | 744 | ||||
“Improving Security.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | 741 | ||||
“Known for our responsiveness, innovation, and customer-focused service, Akal provides officers and specialized training to a broad range of clients.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | United Protective ServicesPartial evidence | 670 | |||
“UNITED PROTECTIVE SERVICES "Our Edge Is Your Security" United Protective Services is a Southwest based provider of security services unique from traditional security companies.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | 622 | ||||
“Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 570 | ||||
“DK Security is unique in that it offers a single company for a wide ranging availability of security and investigative services.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | 488 | ||||
“Securitas has operated in the United Arab Emirates since 2009.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | Imperial SecurityPartial evidence | 452 | |||
“Founded in Memphis, Tennessee, in 1968, Imperial Security is one of the largest and fastest growing contract security providers in the United States.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | 428 | ||||
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 2,177 facility security management based in the United States
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Facility security management based in the United States at a glance
As of Sep 2, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among facility security management, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “facility security management”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among facility security management, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 16,172 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 2, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Facility security management by metro
- Facility security management in New York68
- Facility security management in Los Angeles60
- Facility security management in Houston48
- Facility security management in Miami39
- Facility security management in Dallas37
- Facility security management in Las Vegas28
- Facility security management in Chicago27
- Facility security management in Austin26
Frequently asked
How many facility security management are there based in the United States?
RevenueBase identified 2,177 facility security management headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Allied Universal, headquartered in Rosemont, tops this list with the largest team on record.
Which city has the most facility security management?
New York leads with 68 headquartered companies, followed by Los Angeles (60) and Houston (48).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 16,172 verified decision-maker contacts tracked across these 2,177 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 2, 2026.
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Facility security management by geography
- Facility security management based in the United Kingdom
- Facility security management based in France
- Facility security management based in Brazil
- Facility security management based in Germany
- Facility security management based in Canada
- Facility security management based in the Netherlands
- Facility security management based in Australia
- Facility security management based in Italy
- Facility security management based in South Africa
- Facility security management based in Spain
- Facility security management based in Mexico
- Facility security management based in Argentina
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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