Company lists · Data refreshed September 2026

Top 25 Residential security companies based in the United States

RevenueBase identified 2,855 residential security companies headquartered in the United States as of September 2026 and tracks 98,942 professional contacts across them, including 9,971 with verified work emails and 30,309 with mobile numbers. Los Angeles is the largest hub.

This list covers residential security companies 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
2,855Companies
98,942Contacts tracked
9,971Verified emails
30,309Mobile numbers
Explore all 2,855 companies → Free signup · no credit card · 500 free credits

The 25 largest residential security companies based in the United States

Ranked by team size
Top 25 of 2,855 residential security companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names residential security companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1Parsippany, NJ, United StatesHQ checked Sep 5, 202610001+38,634

Securitas knows Security.”

Source: company website · checked Sep 5, 2026
2
UnemployedPartial evidence
St. Petersburg, FL, United StatesHQ checked Sep 5, 2026n/a4,038

“Excelsior Defense is a security and investigations company based out of St.”

Source: company website · checked Sep 5, 2026
3Roswell, GA, United StatesHQ checked Sep 5, 202610001+3,592

“U.S.”

Source: company website · checked Sep 5, 2026
4
Walden SecurityPartial evidence
Chattanooga, TN, United StatesHQ checked Sep 5, 20265,001-10,0002,174

“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: company website · checked Sep 5, 2026
5
EveronPartial evidence
Irving, TX, United StatesHQ checked Sep 5, 20261,001-5,0002,045

“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.”

Source: company website · checked Sep 5, 2026
6
GuardsmarkPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202610001+1,375

“Guardsmark, LLC provides security services.”

Source: company website · checked Sep 5, 2026
7
Vector SecurityPartial evidence
Warrendale, PA, United StatesHQ checked Sep 5, 20261,001-5,0001,287

“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: company website · checked Sep 5, 2026
8North Kansas City, MO, United StatesHQ checked Sep 5, 20261,001-5,0001,276

“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: company website · checked Sep 5, 2026
9
Titan Security GroupPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 20261,001-5,0001,138

“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 5, 2026
10
PER MAR Security ServicesPartial evidence
Davenport, IA, United StatesHQ checked Sep 5, 20261,001-5,0001,120

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

Source: company website · checked Sep 5, 2026
11Pittsburgh, PA, United StatesHQ checked Sep 5, 20265,001-10,0001,062

“Founded in 1982, St.”

Source: company website · checked Sep 5, 2026
12
DefendersPartial evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 20261,001-5,000885

“DEFENDERS is a leader in the home security industry, providing safety and peace of mind to more than 1.5 million families nationwide.”

Source: company website · checked Sep 5, 2026
13
BAY Alarm CompanyPartial evidence
Concord, CA, United StatesHQ checked Sep 5, 20261,001-5,000797

“Bay Alarm is a family-owned national security company in operation since 1946.”

Source: company website · checked Sep 5, 2026
14
CPI SecurityPartial evidence
Charlotte, NC, United StatesHQ checked Sep 5, 2026501-1,000763

“For more than 30 years, CPI Security has been a leader in customized home and business security and home automation services.”

Source: company website · checked Sep 5, 2026
15
Guardian ProtectionPartial evidence
Warrendale, PA, United StatesHQ checked Sep 5, 2026501-1,000677

“Protecting homes and businesses since 1950, Guardian Protection is one of the nation's largest and most highly regarded security companies.”

Source: company website · checked Sep 5, 2026
16
Palamerican SecurityPartial evidence
St. Petersburg, FL, United StatesHQ checked Sep 5, 202610001+636

“PalAmerican Security is an industry-leading security provider, delivering customized programs across 44 states and employees.”

Source: company website · checked Sep 5, 2026
17
Alert 360Partial evidence
Tulsa, TX, United StatesHQ checked Sep 5, 2026501-1,000572

“Alert 360 security is a trusted and best-in-class provider of reliable security solutions for homes and businesses.”

Source: company website · checked Sep 5, 2026
18
ADT Security ServicesStrong evidence
Boca Raton, FL, United StatesHQ checked Sep 5, 2026501-1,000561

“ADT Inc, formerly The ADT Corporation, is an American company that provides residential, small and large business electronic security, fire protection, and other related alarm…”

Source: company website · checked Sep 5, 2026
19
Champion National SecurityIndirect evidence
Richardson, TX, United StatesHQ checked Sep 5, 20261,001-5,000514

“COMMITTED PEOPLE.”

Source: company website · checked Sep 5, 2026
20
Amarok SecurityPartial evidence
Columbia, SC, United StatesHQ checked Sep 5, 2026201-500440

“AMAROK™ is a nationwide commercial security company specializing in comprehensive perimeter security using electric fencing and surveillance tools like cameras, lights, and alarms.”

Source: company website · checked Sep 5, 2026
21
Kent ServicesPartial evidence
North Miami Beach, FL, United StatesHQ checked Sep 5, 20261,001-5,000417

“At Kent, we’re able to pull from an unequaled pool of business and security products and services.”

Source: company website · checked Sep 5, 2026
22
TarianPartial evidence
Louisville, KY, United StatesHQ checked Sep 5, 20265,001-10,000395

“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 5, 2026
23
Guardian AlarmPartial evidence
Southfield, MI, United StatesHQ checked Sep 5, 2026501-1,000389

“Guardian Alarm is one of the largest independently-owned security companies protecting both homes and businesses throughout the Midwest.”

Source: company website · checked Sep 5, 2026
24
Elite Security & StaffingIndirect evidence
San Diego, CA, United StatesHQ checked Sep 5, 20265,001-10,000376

“Elite staffs events and facilities with professionals who create a safe and secure environment.”

Source: company website · checked Sep 5, 2026
25
Iidon Security AssociatesPartial evidence
Dallas, TX, United StatesHQ checked Sep 5, 2026501-1,000338

“iidon Security Associates provides premier security services catered to your company's needs.”

Source: company website · checked Sep 5, 2026

Showing 25 of 2,855 residential security companies based in the United States

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Residential security companies based in the United States at a glance

As of Sep 5, 2026
11-50Median size (employees)
Los AngelesLargest hub · 74 HQs
30,309Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
1,128
11-50
992
51-200
482
201-500
127
501-1,000
61
1,001-5,000
33
5,001-10,000
8
10001+
9

Verified emails by last verification

0–30
9,234
31–60
546
61–90
3
90–180
1
180+
187

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 residential security companies, 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 “residential security companies”. 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 residential security companies, 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, 9,971 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 5, 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.

Residential security companies by metro

Frequently asked

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

RevenueBase identified 2,855 residential security companies 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 residential security companies?

Los Angeles leads with 74 headquartered companies, followed by New York (58) and Houston (50).

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 9,971 verified decision-maker contacts tracked across these 2,855 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 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.