Company lists · Data refreshed September 2026

Top 25 Security integrators based in the United States

RevenueBase identified 9,256 security integrators headquartered in the United States as of September 2026 and tracks 307,237 professional contacts across them, including 72,970 with verified work emails. Houston is the largest hub.

This list covers security integrators 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 September 21, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
9,256Companies
307,237Contacts tracked
72,970Verified emails
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The 25 largest security integrators based in the United States

Ranked by team size
Top 25 of 9,256 security integrators based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to security integrators: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceIrvine, CA, United StatesHQ checked Sep 21, 202610001+62,804 contacts →

Partial evidence

“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…”

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceParsippany, NJ, United StatesHQ checked Sep 21, 202610001+38,634 contacts →

Partial evidence

Securitas knows Security.”

Source: RevenueBase Database · checked Sep 21, 2026
3Partial evidenceHoffman Estates, IL, United StatesHQ checked Sep 21, 202610001+5,707 contacts →

Partial evidence

“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceRoswell, GA, United StatesHQ checked Sep 21, 202610001+3,592 contacts →

Indirect evidence

“U.S.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceTysons, VA, United StatesHQ checked Sep 21, 20265,001-10,0002,761 contacts →

Indirect evidence

“M.C.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceSan Mateo, CA, United StatesHQ checked Sep 21, 20261,001-5,0002,683 contacts →

Indirect evidence

“Transforming how organizations protect people and places.”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceAlpharetta, GA, United StatesHQ checked Sep 21, 2026n/a2,678 contacts →

Indirect evidence

“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
8Partial evidenceMelville, NY, United StatesHQ checked Sep 21, 20261,001-5,0002,413 contacts →

Partial evidence

“ADI | Snap One is a premier distributor serving customers worldwide with comprehensive security, audiovisual, and smart living solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
9Partial evidenceAurora, IL, United StatesHQ checked Sep 21, 20265,001-10,0002,266 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 Sep 21, 2026
10Partial evidenceIrving, TX, United StatesHQ checked Sep 21, 20261,001-5,0002,045 contacts →

Partial 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 Sep 21, 2026
11Partial evidenceHerndon, VA, United StatesHQ checked Sep 21, 202610001+1,949 contacts →

Partial evidence

“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceTempe, AZ, United StatesHQ checked Sep 21, 20261,001-5,0001,800 contacts →

Indirect evidence

“IES Communications a division of IES (NASDAQ: IESC) provides each client with a team of highly qualified dedicated professionals that deliver superior quality and cost effective…”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceDenver, CO, United StatesHQ checked Sep 21, 20265,001-10,0001,727 contacts →

Indirect evidence

“HSS is now Tarian!”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceRomeoville, IL, United StatesHQ checked Sep 21, 20261,001-5,0001,406 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 Sep 21, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 21, 202610001+1,375 contacts →

Partial evidence

“Guardsmark, LLC provides security services.”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceWarrendale, PA, United StatesHQ checked Sep 21, 20261,001-5,0001,287 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 Sep 21, 2026
17Partial evidenceNorth Kansas City, MO, United StatesHQ checked Sep 21, 20261,001-5,0001,276 contacts →

Partial evidence

“Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceAurora, OH, United StatesHQ checked Sep 21, 20261,001-5,0001,159 contacts →

Partial evidence

“As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceChicago, IL, United StatesHQ checked Sep 21, 20261,001-5,0001,138 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 Sep 21, 2026
20Partial evidenceDavenport, IA, United StatesHQ checked Sep 21, 20261,001-5,0001,120 contacts →

Partial evidence

“Per Mar Security Services is the largest full-service security solutions provider in the Midwest.”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceHerndon, VA, United StatesHQ checked Sep 21, 202610001+1,118 contacts →

Partial evidence

Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 21, 20265,001-10,0001,062 contacts →

Indirect evidence

“Founded in 1982, St.”

Source: RevenueBase Database · checked Sep 21, 2026
23Partial evidenceEnglewood, CO, United StatesHQ checked Sep 21, 20261,001-5,0001,001 contacts →

Partial evidence

“E2 Optics is an award-winning, woman-owned, low voltage IT solutions integrator.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceJacksonville, FL, United StatesHQ checked Sep 21, 20265,001-10,000932 contacts →

Indirect evidence

“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: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceLewisville, TX, United StatesHQ checked Sep 21, 20261,001-5,000857 contacts →

Indirect evidence

“Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 9,256 security integrators based in the United States

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Security integrators based in the United States at a glance

As of Sep 21, 2026
23.8%Verified-email coverage
33.2Average contacts per company
11-50Median size (employees)
2.0%Largest-city concentration · Houston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
4,099
11-50
3,536
51-200
1,101
201-500
268
501-1,000
108
1,001-5,000
80
5,001-10,000
15
10001+
24

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 9,256 companies.

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 security integrators, 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 “security integrators”. 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 security integrators), 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 security integrators, 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, 72,970 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 21, 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.

Security integrators 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 security integrators, 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 security integrators are there based in the United States?

RevenueBase identified 9,256 security integrators 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 Irvine, tops this list with the largest team on record.

Which city has the most security integrators?

Houston leads with 185 headquartered companies, followed by New York (183) and Miami (129).

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 72,970 verified decision-maker contacts tracked across these 9,256 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 21, 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 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.