Company lists · Data refreshed September 2026
Top 25 Merchandise security companies based in the United States
RevenueBase identified 1,884 merchandise security companies headquartered in the United States as of September 2026 and tracks 110,070 professional contacts across them, including 9,200 with verified work emails and 33,173 with mobile numbers. Los Angeles is the largest hub.
This list covers merchandise security companies 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 5, 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 merchandise security companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,634 | ||||
“Securitas knows Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | UnemployedPartial evidence | 4,038 | |||
“Excelsior Defense is a security and investigations company based out of St.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,592 | ||||
“U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,266 | ||||
“Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,174 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 2,045 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,781 | ||||
“Whelan’s commitment to quality and service has made us one of the foremost respected, successful and fastest growing companies in the industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,727 | ||||
“HSS is now Tarian!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,639 | ||||
“Sunstates Security, LLC is one of the industry's leading providers of contract security services with a differentiated approach to providing successful, cost-effective, quality…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,497 | ||||
“Since 1994, Metro One has grown from a local, guard-based security firm into a nationally recognized leader in retail loss prevention-trusted by 8 of the Top 10 U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,441 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,399 | ||||
“Weiser Security Services is the 11th largest security service provider in the U.S.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,375 | ||||
“Guardsmark, LLC provides security services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,190 | ||||
“DSI Security Services offers armed and unarmed uniformed security guard services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,151 | ||||
“SOS Security is a known innovator and leader in the security and protective services industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,138 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,120 | ||||
“Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,062 | ||||
“Founded in 1982, St.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 932 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 782 | ||||
“Now part of Allied Universal.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 748 | ||||
“Improving Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Pro-Vigil Surveillance ServicesIndirect evidence | 702 | |||
“Pro-Vigil is the smartest, fastest, most reliable, surveillance and monitoring solution, to enable you to focus on your core business, whether that’s in construction, an auto…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | United Protective ServicesPartial evidence | 678 | |||
“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 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 636 | ||||
“PalAmerican Security is an industry-leading security provider, delivering customized programs across 44 states and employees.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 626 | ||||
“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 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,884 merchandise security companies based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,200 reachable decision-makers.
Free signup · no credit card
Merchandise security companies based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 merchandise security companies, 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 “merchandise security companies”. 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 merchandise security companies, 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, 9,200 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 5, 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.
Merchandise security companies by metro
Frequently asked
How many merchandise security companies are there based in the United States?
RevenueBase identified 1,884 merchandise security companies 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?
Securitas Security Services Usa, INC, headquartered in Parsippany, tops this list with the largest team on record.
Which city has the most merchandise security companies?
Los Angeles leads with 58 headquartered companies, followed by New York (57) and Houston (46).
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 9,200 verified decision-maker contacts tracked across these 1,884 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 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,884 merchandise security companies based in the United States. Start with a free account, no credit card.
Get the full listRelated lists
Merchandise security companies by geography
- Merchandise security companies based in the United Kingdom
- Merchandise security companies based in France
- Merchandise security companies based in Brazil
- Merchandise security companies based in Germany
- Merchandise security companies based in Canada
- Merchandise security companies based in the Netherlands
- Merchandise security companies based in Italy
- Merchandise security companies based in Australia
- Merchandise security companies based in South Africa
- Merchandise security companies based in Mexico
- Merchandise security companies based in Argentina
- Merchandise security companies based in Spain
Browse the directory
Browse: Companies home · All United States lists · All Merchandise security companies lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Merchandise security companies based in the United Kingdom
- Merchandise security companies based in France
- Merchandise security companies based in Brazil
- Merchandise security companies based in Germany
- Merchandise security companies based in Canada
- Merchandise security companies based in the Netherlands