Company lists · Data refreshed August 2026

Top 25 Commercial security services based in the United States

Name: Commercial security services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 4,930 companies tracked

RevenueBase identified 4,930 commercial security services headquartered in the United States as of August 2026 and tracks 217,859 professional contacts across them, including 24,150 with verified work emails and 67,302 with mobile numbers. New York is the largest hub.

This list covers commercial 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 31, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

4,930Companies

217,859Contacts tracked

24,150Verified emails

67,302Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest commercial security services based in the United States

Ranked by team size

Top 25 of 4,930 commercial security services based in the United States, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to commercial security services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Andy Frain Services	Partial evidence	Aurora, IL, United States	5,001-10,000	2,265 contacts →
	Partial evidence “Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Source: RevenueBase Database · checked Aug 31, 2026
2	Walden Security	Partial evidence	Charlotte, NC, United States	5,001-10,000	2,167 contacts →
	Partial evidence “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: RevenueBase Database · checked Aug 31, 2026
3	Everon	Strong evidence	Irving, TX, United States	1,001-5,000	2,022 contacts →
	Strong evidence “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: RevenueBase Database · checked Aug 31, 2026
4	Sunstates Security	Partial evidence	Dallas, TX, United States	5,001-10,000	1,629 contacts →
	Partial evidence “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: RevenueBase Database · checked Aug 31, 2026
5	Admiral Security Services	Partial evidence	Bethesda, MD, United States	5,001-10,000	1,438 contacts →
	Partial evidence “Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Source: RevenueBase Database · checked Aug 31, 2026
6	Protection 1 Security Solutions	Partial evidence	Wichita, KS, United States	1,001-5,000	1,405 contacts →
	Partial evidence “As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Source: RevenueBase Database · checked Aug 31, 2026
7	Weiser Security Services, INC	Partial evidence	New Orleans, LA, United States	1,001-5,000	1,389 contacts →
	Partial evidence “Weiser Security Services is the 11th largest security service provider in the U.S.” Source: RevenueBase Database · checked Aug 31, 2026
8	Vector Security	Partial evidence	Mansfield, OH, United States	1,001-5,000	1,286 contacts →
	Partial evidence “Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Source: RevenueBase Database · checked Aug 31, 2026
9	DSI Security Services	Partial evidence	Dothan, AL, United States	1,001-5,000	1,186 contacts →
	Partial evidence “DSI Security Services offers armed and unarmed uniformed security guard services.” Source: RevenueBase Database · checked Aug 31, 2026
10	Titan Security Group	Partial evidence	Chicago, IL, United States	1,001-5,000	1,133 contacts →
	Partial evidence “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: RevenueBase Database · checked Aug 31, 2026
11	PER MAR Security Services	Partial evidence	Davenport, IA, United States	1,001-5,000	1,122 contacts →
	Partial evidence “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Source: RevenueBase Database · checked Aug 31, 2026
12	St. Moritz Security Services, INC	Indirect evidence	Dallas, TX, United States	5,001-10,000	1,057 contacts →
	Indirect evidence “Founded in 1982, St.” Source: RevenueBase Database · checked Aug 31, 2026
13	BAY Alarm Company	Partial evidence	Hayward, CA, United States	1,001-5,000	795 contacts →
	Partial evidence “Bay Alarm is a family-owned national security company in operation since 1946.” Source: RevenueBase Database · checked Aug 31, 2026
14	Securamerica	Indirect evidence	Atlanta, GA, United States	5,001-10,000	783 contacts →
	Indirect evidence “Now part of Allied Universal.” Source: RevenueBase Database · checked Aug 31, 2026
15	Northeast Security INC	Partial evidence	Westwood, MA, United States	1,001-5,000	744 contacts →
	Partial evidence “Improving Security.” Source: RevenueBase Database · checked Aug 31, 2026
16	United Protective Services	Partial evidence	Dallas, TX, United States	1,001-5,000	670 contacts →
	Partial evidence “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: RevenueBase Database · checked Aug 31, 2026
17	Ranger American	Partial evidence	San Juan, United States	1,001-5,000	511 contacts →
	Partial evidence “Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Source: RevenueBase Database · checked Aug 31, 2026
18	Valor Security Services	Partial evidence	Marietta, GA, United States	1,001-5,000	451 contacts →
	Partial evidence “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: RevenueBase Database · checked Aug 31, 2026
19	Star Protection Agency, LLC	Partial evidence	Las Vegas, NV, United States	1,001-5,000	450 contacts →
	Partial evidence “One of the fastest-growing private security companies in Western Washington, providing "Security Solutions for a Changing World." The Star Protection Promise is to provide an…” Source: RevenueBase Database · checked Aug 31, 2026
20	Kent Services	Partial evidence	North Miami Beach, FL, United States	1,001-5,000	418 contacts →
	Partial evidence “At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Source: RevenueBase Database · checked Aug 31, 2026
21	Tarian	Partial evidence	Louisville, KY, United States	5,001-10,000	389 contacts →
	Partial evidence “Tarian’s vision is to shape a future where safety and security are not only foundations for enduring success but also powerful catalysts.” Source: RevenueBase Database · checked Aug 31, 2026
22	Elite Security & Staffing	Indirect evidence	Miami Gardens, FL, United States	5,001-10,000	375 contacts →
	Indirect evidence “Elite staffs events and facilities with professionals who create a safe and secure environment.” Source: RevenueBase Database · checked Aug 31, 2026
23	Cambridge Security Services Corp	Partial evidence	Fort Lauderdale, FL, United States	1,001-5,000	343 contacts →
	Partial evidence “Cambridge Security Services is a private security company that has been in business for more than 30 years.” Source: RevenueBase Database · checked Aug 31, 2026
24	United American Security, LLC UAS	Partial evidence	Virginia Beach, VA, United States	1,001-5,000	322 contacts →
	Partial evidence “United American Security was formed in 2010 to bring excellent regional security companies together.” Source: RevenueBase Database · checked Aug 31, 2026
25	Huntleigh USA	Indirect evidence	Irving, TX, United States	1,001-5,000	314 contacts →
	Indirect evidence Source: RevenueBase Database · checked Aug 31, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: commercial security services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names commercial security services.
Partial evidence: Its own public description names part of commercial security services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial security services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 4,930 commercial security services based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 24,150 reachable decision-makers.

Free signup · no credit card

View the full list →

Commercial security services based in the United States at a glance

As of Aug 31, 2026

11.1%Verified-email coverage

30.9%Mobile-number coverage

44.2Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · New York

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

1,863

11-50

1,766

51-200

810

201-500

242

501-1,000

111

1,001-5,000

5,001-10,000

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 commercial security services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “commercial security services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names commercial security services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among commercial 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 its RevenueBase Smart Search 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, 24,150 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 August 31, 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.

Commercial security services by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names commercial security services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many commercial security services are there based in the United States?

RevenueBase identified 4,930 commercial security services headquartered in the United States as of August 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?

Andy Frain Services, headquartered in Aurora, tops this list with the largest team on record.

Which city has the most commercial security services?

New York leads with 124 headquartered companies, followed by Houston (119) and Los Angeles (109).

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 24,150 verified decision-maker contacts tracked across these 4,930 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.

Ready to reach these companies? Verified emails and direct dials for all 4,930 commercial security services based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Commercial security services by geography

Browse the directory

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 Smart Search, 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.