Company lists · Data verified August 2026

Top 25 Armed security guard companies based in New York, United States

Name: Armed security guard companies based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 129 companies tracked

There are 129 armed security guard companies headquartered in New York, United States (RevenueBase, August 2026). RevenueBase tracks 5,082 professional contacts across them, including 349 with verified work emails and 1,668 with mobile numbers. New York is the largest hub.

This list covers armed security guard companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

129Companies

5,082Contacts tracked

349Verified emails

1,668Mobile numbers

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The 25 largest armed security guard companies based in New York, United States

Ranked by team size

Top 25 of 129 armed security guard companies based in New York, United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Guardsmark	New York, NY	10001+	1,375	1
2	MSA Security	New York, NY	10001+	572	146
3	Mulligan Security	New York, NY	501-1,000	518	7
4	T&m Usa, LLC	New York, NY	201-500	216	55
5	CSS Security	New York, NY	201-500	129	6
6	Excel Security Corporation	New York, NY	501-1,000	119	11
7	International Proactive Security INC	New York, NY	501-1,000	115	12
8	ISS Action	New York	201-500	113	10
9	Allstar Security & Consulting INC	New York, NY	51-200	111	15
10	AJ Squared Security	New York, NY	201-500	83	14
11	Security USA INC	New York, NY	1,001-5,000	81	5
12	City Safe Partners	New York, NY	201-500	70	5
13	Global OPS	New York, NY	201-500	69	3
14	National Security Service	New York, NY	1,001-5,000	68	1
15	Colorado Security Agency	New York	51-200	61	5
16	A&h Security Services	New York, NY	1,001-5,000	61	4
17	Citadel Security Agency	New York, NY	201-500	50	4
18	Knight Security NY	New York, NY	51-200	38	2
19	JC Protection, LLC	New York, NY	51-200	34	4
20	Corporate Loss Prevention Associates	New York	201-500	25	4
21	Target Security Systems	New York, NY	11-50	23	8
22	Lead Security Group INC	New York, NY	51-200	19	2
23	Unity Building Security	New York, NY	201-500	18	3
24	Eastern Security Corporation	New York, NY	201-500	15	1
25	Guard Services USA	New York, NY	11-50	13	4

Showing 25 of 129 armed security guard companies based in New York, United States

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Armed security guard companies based in New York, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 129 HQs

1,668Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Armed security guard companies by metro in the United States

Metro	Companies
Armed security guard companies in New York	129
Armed security guard companies in Los Angeles	126
Armed security guard companies in Houston	94
Armed security guard companies in Miami	79
Armed security guard companies in Chicago	58
Armed security guard companies in Atlanta	58
Armed security guard companies in Las Vegas	51

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “armed security guard companies”, with match quality audited by blind human judging, and headquartered in New York, United States.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many armed security guard companies are there based in New York, United States?

There are 129 armed security guard companies headquartered in New York, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Guardsmark, headquartered in New York, tops this list with the largest team on record.

Which city has the most armed security guard companies?

New York leads with 129 headquartered companies, followed by Los Angeles (126) and Houston (94).

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 349 verified decision-maker contacts tracked across these 129 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.