Company lists · Data refreshed September 2026
Top 25 Retail security services based in the United States
RevenueBase identified 1,420 retail security services headquartered in the United States as of September 2026 and tracks 84,489 professional contacts across them, including 5,844 with verified work emails and 23,403 with mobile numbers. Los Angeles is the largest hub.
This list covers retail security services 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 6, 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 retail security services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,634 | ||||
“Securitas knows Security.” Source: company website · checked Sep 6, 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 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,592 | ||||
“U.S.” Source: company website · checked Sep 6, 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 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,399 | ||||
“Weiser Security Services is the 11th largest security service provider in the U.S.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,375 | ||||
“Guardsmark, LLC provides security services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,062 | ||||
“Founded in 1982, St.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 782 | ||||
“Now part of Allied Universal.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 572 | ||||
“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 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 511 | ||||
“Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 449 | ||||
“As a leading provider of security services for retail, hospitality, and mixed-use properties throughout the United States since 1991, we have continually honed our approach to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 426 | ||||
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 395 | ||||
“Tarian’s vision is to shape a future where safety and security are not only foundations for enduring success but also powerful catalysts.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 346 | ||||
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | 338 | ||||
“iidon Security Associates provides premier security services catered to your company's needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 320 | ||||
“United American Security was formed in 2010 to bring excellent regional security companies together.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 301 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | 282 | ||||
“Retailers face a constant challenge: secure valuable products without creating barriers for shoppers or store teams.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 275 | ||||
“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | 241 | ||||
“GuardTexas is a Texas-owned security services provider delivering professional, dependable protection since 1976.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 238 | ||||
“HS Brands Global is the Leading Brand Protection, Mystery Shopping, Loss Prevention & Compliance Measurement Solution provider operating worldwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,420 retail security services based in the United States
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Retail security services based in the United States at a glance
As of Sep 6, 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 retail security services, 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 “retail security services”. 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 retail security services, 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, 5,844 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 6, 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.
Retail security services by metro
- Retail security services in Los Angeles55
- Retail security services in New York49
- Retail security services in Houston31
- Retail security services in Miami31
Frequently asked
How many retail security services are there based in the United States?
RevenueBase identified 1,420 retail security services 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 retail security services?
Los Angeles leads with 55 headquartered companies, followed by New York (49) and Houston (31).
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 5,844 verified decision-maker contacts tracked across these 1,420 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 6, 2026.
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Retail security services by geography
- Retail security services based in the United Kingdom
- Retail security services based in France
- Retail security services based in Germany
- Retail security services based in Canada
- Retail security services based in Brazil
- Retail security services based in Australia
- Retail security services based in the Netherlands
- Retail security services based in Italy
- Retail security services based in South Africa
- Retail security services based in Argentina
- Retail security services based in Spain
- Retail security services based in Switzerland
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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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