Company lists · Data refreshed November 2026

Top 25 Security systems installation companies based in the United States

Name: Security systems installation companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 5,181 companies tracked

RevenueBase identified 5,181 company matches for security systems installation companies associated with the United States as of November 2026 and tracks 208,008 professional contacts across them, including 35,176 with verified work emails. New York is the largest hub.

This list covers company matches for security systems installation companies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built

5,181Companies

208,008Contacts tracked

35,176Verified emails

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The 25 largest security systems installation companies based in the United States

Ranked by team size

Top 25 of 5,181 company matches for security systems installation companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Allied Universal	Exact match	Irvine, IL, United StatesHQ recorded Nov 5, 2026	10001+	66,203 contacts →
	Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2	Securitas Security Services Usa, INC	Exact match	Parsippany, MI, United StatesHQ recorded Nov 5, 2026	10001+	40,551 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Nov 5, 2026	10001+	6,031 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4	U.S. Security Associates, INC	Exact match	Roswell, UT, United StatesHQ recorded Nov 5, 2026	10001+	4,263 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Automated Systems Design, INC	Exact match	Alpharetta, GA, United StatesHQ recorded Nov 5, 2026	n/a	2,754 contacts →
	Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6	Everon	Exact match	Irving, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,178 contacts →
	Exact match “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7	Weiser Security Services, INC	Exact match	New Orleans, LA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,540 contacts →
	Exact match “Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	Protection 1 Security Solutions	Exact match	Romeoville, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,467 contacts →
	Exact match “As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	alarm.com	Exact match	Tysons, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,420 contacts →
	Exact match “Alarm.com is the leading platform for the intelligently connected property.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Vector Security	Exact match	Warrendale, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,365 contacts →
	Exact match “Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11	Safe Haven Security Services, LLC	Exact match	North Kansas City, MO, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,288 contacts →
	Exact match “Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12	DSI Security Services	Exact match	Dothan, AL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,277 contacts →
	Exact match “DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	PER MAR Security Services	Exact match	Davenport, IA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,234 contacts →
	Exact match “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14	Titan Security Group	Exact match	Chicago, IL, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,209 contacts →
	Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15	Security 101	Exact match	West Palm Beach, TN, United StatesHQ recorded Nov 5, 2026	501-1,000	927 contacts →
	Exact match “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16	Defenders	Exact match	Indianapolis, IN, United StatesHQ recorded Nov 5, 2026	1,001-5,000	899 contacts →
	Exact match “DEFENDERS is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Koorsen Fire And Security	Exact match	Indianapolis, KY, United StatesHQ recorded Nov 5, 2026	1,001-5,000	861 contacts →
	Exact match “Koorsen Fire & Security is a family-owned operation that has kept homes and businesses safe for more than 70 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Securitas Electronic Security, INC	Exact match	Uniontown, IL, United StatesHQ recorded Nov 5, 2026	10001+	837 contacts →
	Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	CPI Security	Exact match	Charlotte, SC, United StatesHQ recorded Nov 5, 2026	501-1,000	798 contacts →
	Exact match “For more than 30 years, CPI Security has been a leader in customized home and business security and home automation services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	ADT Commercial	Exact match	Boca Raton, FL, United StatesHQ recorded Nov 5, 2026	n/a	769 contacts →
	Exact match “ADT Commercial, LLC was acquired by GTCR and is now Everon, LLC.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Guardian Protection	Exact match	Warrendale, PA, United StatesHQ recorded Nov 5, 2026	501-1,000	721 contacts →
	Exact match “Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Pro-Vigil Surveillance Services	Exact match	San Antonio, TX, United StatesHQ recorded Nov 5, 2026	201-500	709 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Alert 360	Exact match	Tulsa, CA, United StatesHQ recorded Nov 5, 2026	501-1,000	601 contacts →
	Exact match “Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Stealth Monitoring, INC	Exact match	Dallas, TX, United StatesHQ recorded Nov 5, 2026	201-500	593 contacts →
	Exact match “ECAM, a GardaWorld company, provides proactive live video surveillance solutions for businesses and properties in cities all across North America.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Ford Audio-Video	Exact match	Oklahoma City, NV, United StatesHQ recorded Nov 5, 2026	501-1,000	578 contacts →
	Exact match “Ford AV designs, installs, and services professional and commercial sound, audio-video, network infrastructure, and security surveillance systems for organizations including…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “security systems installation companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 5,181 security systems installation companies based in the United States

See the full list, filter by size, metro and specialty, and access 35,176 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security systems installation companies based in the United States at a glance

As of Nov 5, 2026

16.9%Verified-email coverage

40.1Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · New York

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

2,406

11-50

1,990

51-200

542

201-500

106

501-1,000

1,001-5,000

5,001-10,000

10001+

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 5,181 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “security systems installation companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 35,176 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Security systems installation companies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “security systems installation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security systems installation companies are there based in the United States?

RevenueBase identified 5,181 company matches for security systems installation companies associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Allied Universal tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most security systems installation companies?

New York leads with 102 company records, followed by Houston (98) and Miami (56).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 35,176 professional contacts with verified work emails tracked across these 5,181 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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.