Company lists · Data refreshed September 2026
Top 23 Physical security companies based in New York, United States
RevenueBase identified 80 physical security companies headquartered in New York, United States as of September 2026 and tracks 3,679 professional contacts across them, including 287 with verified work emails. Los Angeles is the largest hub.
This list covers physical security 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. 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.
The 23 largest physical security companies based in New York, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,375 | ||||
“Guardsmark, LLC provides security services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 519 | ||||
“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 206 | ||||
“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 120 | ||||
“Excel Security Corp.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | ESCCPartial evidence | 113 | |||
“ESCC has led the way in integrated security and communications applications for commercial properties, high-end residential properties, and new development projects for over 30…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 110 | ||||
“Allstar Security & Consulting is a full service, licensed, bonded and insured security services company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | Narrow SecurityPartial evidence | 103 | |||
“Narrow Security provides Fire Guard Services and Security Guard Services across the US.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 82 | ||||
“For over 30 years GMSC has been securing high profile buildings and offices across New York and Chicago.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 82 | ||||
“Security USA®, Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 72 | ||||
“ADR Security is the leading provider of electronic and physical security services to some of New York's largest residential real estate portfolios.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 70 | ||||
“At GLOBAL OPS, we specialize in creating and implementing tailored security solutions that cater to the unique needs of our diverse clientele.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 60 | ||||
“A&H Security Services, is a certified NYC MBE security services provider who makes a difference in our community.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Monitex SecurityIndirect evidence | 35 | |||
“Your property secured 24/7 Our services: Construction Site Monitoring: Use real time, Live video surveillance to Prevent property damage, equipment theft, and injury liability…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 34 | ||||
“JC Protection wants to ensure peace of mind to our clients by providing the highest level of protection for their enterprise, their assets and the safety of their personnel.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 23 | ||||
“Target Security Systems, LLC is New York City’s leading provider of cutting edge, high security solutions customized for today’s business and private sectors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 19 | ||||
“Professional security solutions and protective firm, providing armed & unarmed security services, security patrols and executive Protection services for individuals, residential…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 18 | ||||
“We help busy organizations provide maximum security with simple but sophisticated solutions which enable them to have everything under control.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Narrowgate Security AgencyStrong evidence | 18 | |||
“We provide analysis and design of Physical Security Systems (PSS) of high risk facilities and critical infrastructure.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 17 | ||||
“NEVER COMPROMISE WHEN IT COMES TO PROTECTION Under the leadership of Dennis J.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 15 | ||||
“Eastern Security Corporation specializes in security guard services and meticulously crafted security plans.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 | ||||
“We help our clients focus on their primary business operations while we handle their security needs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Sight Watch SecurityPartial evidence | 13 | |||
“At SightWatch Security, we deliver proactive and trusted security solutions-from perimeter assessments to camera installation and real-time 24/7 monitoring.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Giss InternationalPartial evidence | 9 | |||
“Global Investigation Security Services (GISS) meeting the security needs of our clients in today’s global market.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 23 of 80 physical security companies based in New York, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 287 reachable decision-makers.
Free signup · no credit card
Physical security companies based in New York, United States at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for New York, over 80 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 physical 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 New York, United States whose own description of what they do matches “physical 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 physical security companies, and records with no verified work email. Companies headquartered outside New York 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, 287 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.
Physical security companies by metro in the United States
- Physical security companies in Los Angeles81
- Physical security companies in New York80
- Physical security companies in Houston71
- Physical security companies in Miami52
- Physical security companies in Dallas44
- Physical security companies in Chicago31
- Physical security companies in Atlanta29
- Physical security companies in Austin28
- Physical security companies in Phoenix25
Frequently asked
How many physical security companies are there based in New York, United States?
RevenueBase identified 80 physical security companies headquartered in New York, 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?
Guardsmark, headquartered in New York, tops this list with the largest team on record.
Which city has the most physical security companies?
Los Angeles leads with 81 headquartered companies, followed by New York (80) and Houston (71).
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 287 verified decision-maker contacts tracked across these 80 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.
Ready to reach these companies? Verified emails and direct dials for all 80 physical security companies based in New York, United States. Start with a free account, no credit card.
Get the full listRelated lists
Physical security companies by geography
- Physical security companies based in the United States
- Physical security companies based in the United Kingdom
- Physical security companies based in Brazil
- Physical security companies based in France
- Physical security companies based in Canada
- Physical security companies based in Germany
- Physical security companies based in Australia
- Physical security companies based in the Netherlands
- Physical security companies based in Italy
- Physical security companies based in South Africa
- Physical security companies based in Spain
- Physical security companies based in Mexico
Browse the directory
Browse: Companies home · Physical security companies in United States · All United States lists · All Physical security companies lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Physical security companies based in the United States
- Physical security companies based in the United Kingdom
- Physical security companies based in Brazil
- Physical security companies based in France
- Physical security companies based in Canada
- Physical security companies based in Germany