Company lists · Data verified August 2026

Top 20 Armed security guard services based in Chicago, United States

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 62 companies tracked

There are 62 armed security guard services headquartered in Chicago, United States (RevenueBase, August 2026). RevenueBase tracks 3,011 professional contacts across them, including 361 with verified work emails and 985 with mobile numbers. New York is the largest hub.

This list covers armed security guard services headquartered in Chicago, 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.

62Companies

3,011Contacts tracked

361Verified emails

985Mobile numbers

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The 20 largest armed security guard services based in Chicago, United States

Ranked by team size

Top 20 of 62 armed security guard services based in Chicago, 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	Titan Security Group	Chicago, IL	1,001-5,000	1,133	219
2	Monterrey Security	Chicago, IL	n/a	660	17
3	United Service Companies	Chicago, IL	10001+	175	60
4	Safety Service Systems Inc. S3, INC	Chicago, IL	501-1,000	140	1
5	Gmsc Security	Chicago, IL	501-1,000	81	13
6	Prudential Defense Solutions	Chicago, IL	1,001-5,000	62	3
7	Black Knight Security	Chicago, IL	201-500	48	6
8	Mfort Security Services	Chicago, IL	201-500	45	9
9	Extrity Services	Chicago, IL	51-200	35	5
10	Arms Security Corporation	Chicago, IL	501-1,000	25	4
11	Benford Protection Group	Chicago, IL	11-50	25	3
12	Lawdog Security & Investigations INC	Chicago, IL	51-200	19	3
13	Halo Security Group	Chicago, IL	201-500	18	5
14	Universal Security	Chicago, IL	201-500	13	2
15	Inner Valor, INC	Chicago, IL	201-500	13	1
16	Valle Services	Chicago, IL	11-50	10	4
17	American Guard Group LLC	Chicago, IL	51-200	9	1
18	Stark Security INC	Chicago, IL	11-50	7	2
19	Securidad Partners Inc. MBE	Chicago, IL	51-200	5	1
20	E'clat Security Group, Pllc	Chicago, IL	11-50	3	2

Showing 20 of 62 armed security guard services based in Chicago, United States

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Armed security guard services based in Chicago, United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 141 HQs

985Contacts with mobile numbers

1Emails 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 services by metro in the United States

Metro	Companies
Armed security guard services in New York	141
Armed security guard services in Los Angeles	126
Armed security guard services in Houston	109
Armed security guard services in Miami	81
Armed security guard services in Chicago	62
Armed security guard services in Atlanta	54
Armed security guard services in Austin	51
Armed security guard services in Las Vegas	49

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 services”, with match quality audited by blind human judging, and headquartered in Chicago, 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; 1 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 services are there based in Chicago, United States?

There are 62 armed security guard services headquartered in Chicago, United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Titan Security Group, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most armed security guard services?

New York leads with 141 headquartered companies, followed by Los Angeles (126) and Houston (109).

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 361 verified decision-maker contacts tracked across these 62 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.