Company lists · Data refreshed September 2026
Top 25 Facility security patrol services based in the United States
RevenueBase identified 395 facility security patrol services headquartered in the United States as of September 2026 and tracks 8,984 professional contacts across them, including 358 with verified work emails and 1,775 with mobile numbers. Los Angeles is the largest hub.
This list covers facility security patrol 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 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 patrol services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | UnemployedPartial evidence | 4,055 | |||
“Excelsior Defense is a security and investigations company based out of St.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 2 | Pacwest Security ServicesPartial evidence | 200 | |||
“We are a privately owned California security services provider who is committed to excellence in service in every aspect of our business.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 3 | 173 | ||||
“Established in 2008, Titan Protection and Consulting is a leading-edge security firm specializing in crime prevention and detection for hundreds of companies nationwide.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 4 | Vet-Sec Protection AgencyIndirect evidence | 135 | |||
“Vet-Sec Protection Agency was founded by Chad Benham, William Brandon, and Ennio Canziani in May of 1994.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 5 | 92 | ||||
“Triton Security is a full service security company.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 6 | 88 | ||||
“Protecting You and Your Assets"- DFW Security Protective Force strives in providing a professional onsite security guard and patrol program.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 7 | 81 | ||||
“Your Protection is Our Mission & Your Safety is Our Goal” has been our motto since the founding of Absolute Security International.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 8 | Northwest Enforcement, INCPartial evidence | 71 | |||
“As a locally owned and operated security firm, we lead with transparent communication, dynamic problem-solving, and genuine care.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 9 | 68 | ||||
“DMAC Security is a professional security services provider offering armed and unarmed guards, mobile patrol, fire watch, and surveillance solutions.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 10 | 53 | ||||
“ORNA Security provides high quality security officers, front door & loss prevention personnel dedicated to creating and sustaining secure environments.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 11 | 49 | ||||
“Taybar Security are a leading security services provider, that support a variety of businesses with their specific needs.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 12 | 47 | ||||
“ALERT Protective Services is a unique provider of premium contract security services in the Southwest Florida area.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 13 | 45 | ||||
“We provide professional, licensed, and uniformed security guards and vehicle patrol.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 14 | 45 | ||||
“Morrison Security Corporation Your Trusted Partner in Comprehensive Security Solutions At Morrison Security Corporation, we provide innovative, dependable, and tailored security…” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 15 | Alante Security Group INCIndirect evidence | 42 | |||
Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 16 | 40 | ||||
“JAN-GUARD HAWAII INC began doing business in as a contract security company providing Security Officers and Motorized patrol service on Oahu and the Big Island.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 17 | 38 | ||||
“Peak Security is a division of Peak Alarm, a locally owned family business founded in Salt Lake City in 1969.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 18 | Usentra Security ServicesPartial evidence | 37 | |||
“USENTRA Security Services (formerly Rhode Island Bureau of Investigation - RIBI) is headquartered in Warwick, RI.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 19 | Patrol SolutionsPartial evidence | 35 | |||
“We provide robust unarmed and armed security services.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 20 | ONE Shield Security ServicesPartial evidence | 34 | |||
“One Shield Security is a purpose-driven security firm focused on delivering quality security services to its clients.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 21 | 32 | ||||
“Allied International Security offers armed/unarmed Guards, Patrol Services, CCTV Surveillance for businesses, construction sites, schools, etc.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 22 | 30 | ||||
“We provide the foremost in private security guards and patrol services available today.” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 23 | Sheepdog PatrolStrong evidence | 26 | |||
“Security Patrol Officer Services and Private Investigations” Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 24 | 23 | ||||
Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
| 25 | Green Valley SecurityIndirect evidence | 21 | |||
Source: company website · checked Sep 2, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 395 facility security patrol services based in the United States
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Facility security patrol services 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 patrol 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 “facility security patrol 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 facility security patrol 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, 358 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.
Frequently asked
How many facility security patrol services are there based in the United States?
RevenueBase identified 395 facility security patrol 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?
Unemployed, headquartered in St. Petersburg, tops this list with the largest team on record.
Which city has the most facility security patrol services?
Los Angeles leads with 12 headquartered companies, followed by Houston (11) and Miami (10).
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 358 verified decision-maker contacts tracked across these 395 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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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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