Company lists · Data refreshed November 2026
Top 25 Security guard services based in the United States
RevenueBase identified 2,890 company matches for security guard services associated with the United States as of November 2026 and tracks 113,404 professional contacts across them, including 8,273 with verified work emails. New York is the largest hub.
This list covers company matches for security guard services 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.
The 25 largest security guard services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 40,551 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 4,040 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 3,921 contacts → | ||||
Exact match “Everywhere Security Matters™ Inter-Con is one of the largest and fastest-growing physical security and risk management companies in the world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 2,341 contacts → | ||||
Exact match “Walden Security is the nation's largest privately held, family-owned and operated, American-owned security company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 1,740 contacts → | ||||
Exact match “Sunstates Security, LLC is one of the industry's leading providers of contract security services with a differentiated approach to providing successful, cost-effective, quality…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 1,562 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 1,547 contacts → | ||||
Exact match “Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 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 | |||||
| 9 | 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 | |||||
| 10 | 1,168 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 930 contacts → | ||||
Exact match “Arrow Security stands as one of the nation's largest privately held security guard companies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 835 contacts → | ||||
Exact match “Now part of Allied Universal.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 798 contacts → | ||||
Exact match “Known for our responsiveness, innovation, and customer-focused service, Akal provides officers and specialized training to a broad range of clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 767 contacts → | ||||
Exact match “Improving Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 697 contacts → | ||||
Exact match “Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 562 contacts → | ||||
Exact match “Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 544 contacts → | ||||
Exact match “COMMITTED PEOPLE.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 540 contacts → | ||||
Exact match “Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 483 contacts → | ||||
Exact match “As a leading provider of security services for retail, hospitality, and mixed-use properties throughout the United States since 1991, we have continually honed our approach to…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 455 contacts → | ||||
Exact match “Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 450 contacts → | ||||
Exact match “At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 401 contacts → | ||||
Exact match “Universal Services of America combines an innovative mix of tradition with advanced technology to keep pace with the evolving security and janitorial needs of today's businesses.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 390 contacts → | ||||
Exact match “Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 364 contacts → | ||||
Exact match “Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 354 contacts → | ||||
Exact match “iidon Security Associates provides premier security services catered to your company's needs.” 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 guard services”. 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 2,890 security guard services based in the United States
See the full list, filter by size, metro and specialty, and access 8,273 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Security guard services based in the United States at a glance
As of Nov 5, 2026Companies by employee count
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 2,890 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 guard services” 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 8,273 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 guard services by metro
- Security guard services in New York102
- Security guard services in Los Angeles98
- Security guard services in Houston66
- Security guard services in Miami57
- Security guard services in Chicago39
- Security guard services in Dallas38
- Security guard services in Atlanta36
- Security guard services in Las Vegas33
- Security guard services in Phoenix30
- Security guard services in Austin29
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 guard services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security guard services are there based in the United States?
RevenueBase identified 2,890 company matches for security guard services 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?
Securitas Security Services Usa, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most security guard services?
New York leads with 102 company records, followed by Los Angeles (98) and Houston (66).
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 8,273 professional contacts with verified work emails tracked across these 2,890 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.
Ready to reach these companies? Verified emails and direct dials for all 2,890 security guard services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Security guard services by geography
- Security guard services based in the United Kingdom
- Security guard services based in Brazil
- Security guard services based in France
- Security guard services based in Canada
- Security guard services based in Germany
- Security guard services based in Italy
- Security guard services based in Australia
- Security guard services based in the Netherlands
- Security guard services based in South Africa
- Security guard services based in Mexico
- Security guard services based in Spain
- Security guard services based in Argentina
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
- Security guard services based in the United Kingdom
- Security guard services based in Brazil
- Security guard services based in France
- Security guard services based in Canada
- Security guard services based in Germany
- Security guard services based in Italy
Company intelligence · public preview
Top 25 security guard services based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 2,890 matching company records for security guard services based in the United States, with 113,404 tracked contacts and 8,273 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 security guard services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Securitas Security Services Usa, INCsecuritasinc.comHQ: Parsippany, MI, United StatesReported employees: 10001+ | Parsippany, MI, United States | 10001+ | Exact match | 40,551 contacts → |
“Securitas knows Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,040 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Inter-Con Securityicsecurity.comHQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,921 contacts → |
“Everywhere Security Matters™ Inter-Con is one of the largest and fastest-growing physical security and risk management companies in the world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Walden Securitywaldensecurity.comHQ: Chattanooga, VA, United StatesReported employees: 5,001-10,000 | Chattanooga, VA, United States | 5,001-10,000 | Exact match | 2,341 contacts → |
“Walden Security is the nation's largest privately held, family-owned and operated, American-owned security company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Sunstates Securitysunstatessecurity.comHQ: Raleigh, TX, United StatesReported employees: 5,001-10,000 | Raleigh, TX, United States | 5,001-10,000 | Exact match | 1,740 contacts → |
“Sunstates Security, LLC is one of the industry's leading providers of contract security services with a differentiated approach to providing successful, cost-effective, quality…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Guardsmarkguardsmark.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,562 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Admiral Security Servicesadmiralsecurity.comHQ: Bethesda, United StatesReported employees: 5,001-10,000 | Bethesda, United States | 5,001-10,000 | Exact match | 1,547 contacts → |
“Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  DSI Security Servicesdsisecurity.comHQ: Dothan, AL, United StatesReported employees: 1,001-5,000 | Dothan, AL, United States | 1,001-5,000 | Exact match | 1,277 contacts → |
“DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Titan Security Grouptitan-security.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,209 contacts → |
“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 description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  St. Moritz Security Services, INCsmssi.comHQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,168 contacts → |
“Founded in 1982, St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Arrow Securityarrowsecurity.comHQ: Smithtown, PA, United StatesReported employees: 5,001-10,000 | Smithtown, PA, United States | 5,001-10,000 | Exact match | 930 contacts → |
“Arrow Security stands as one of the nation's largest privately held security guard companies.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Securamericasecuramericallc.comHQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 835 contacts → |
“Now part of Allied Universal.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Akal Securityakalsecurity.comHQ: Espanola, NM, United StatesReported employees: 10001+ | Espanola, NM, United States | 10001+ | Exact match | 798 contacts → |
“Known for our responsiveness, innovation, and customer-focused service, Akal provides officers and specialized training to a broad range of clients.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Northeast Security INCnesecurity.comHQ: Westwood, MA, United StatesReported employees: 1,001-5,000 | Westwood, MA, United States | 1,001-5,000 | Exact match | 767 contacts → |
“Improving Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Professional Security Consultants, INCpscsite.comHQ: Los Angeles, CA, United StatesReported employees: 1,001-5,000 | Los Angeles, CA, United States | 1,001-5,000 | Exact match | 697 contacts → |
“Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Mulligan Securitymulligansecurity.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 562 contacts → |
“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Champion National Securitychamp.netHQ: Richardson, NC, United StatesReported employees: 1,001-5,000 | Richardson, NC, United States | 1,001-5,000 | Exact match | 544 contacts → |
“COMMITTED PEOPLE.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ranger Americanrangeramerican.comHQ: San Juan, United StatesReported employees: 1,001-5,000 | San Juan, United States | 1,001-5,000 | Exact match | 540 contacts → |
“Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Valor Security Servicesvalorsecurity.comHQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 483 contacts → |
“As a leading provider of security services for retail, hospitality, and mixed-use properties throughout the United States since 1991, we have continually honed our approach to…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Summit Security Services, INCsummitsecurity.comHQ: Uniondale, NY, United StatesReported employees: 1,001-5,000 | Uniondale, NY, United States | 1,001-5,000 | Exact match | 455 contacts → |
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Kent Serviceskentservices.comHQ: North Miami Beach, NY, United StatesReported employees: 1,001-5,000 | North Miami Beach, NY, United States | 1,001-5,000 | Exact match | 450 contacts → |
“At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Universal Protection SVCuniversalpro.comHQ: Conshohocken, PA, United StatesReported employees: Not recorded | Conshohocken, PA, United States | Not recorded | Exact match | 401 contacts → |
“Universal Services of America combines an innovative mix of tradition with advanced technology to keep pace with the evolving security and janitorial needs of today's businesses.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Elite Security & Staffingelitesecuritystaffing.comHQ: San Diego, CA, United StatesReported employees: 5,001-10,000 | San Diego, CA, United States | 5,001-10,000 | Exact match | 390 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cambridge Security Services Corpcambridgesecurityservices.comHQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 364 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Iidon Security Associatesiidon.netHQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 354 contacts → |
“iidon Security Associates provides premier security services catered to your company's needs.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,890 company matches
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Security guard services: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,873 records in the displayed employee bands.
17 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 2,890 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Security guard services by metro
- Security guard services in New York102
- Security guard services in Los Angeles98
- Security guard services in Houston66
- Security guard services in Miami57
- Security guard services in Chicago39
- Security guard services in Dallas38
- Security guard services in Atlanta36
- Security guard services in Las Vegas33
- Security guard services in Phoenix30
- Security guard services in Austin29
Questions about this company list
What does Exact match mean for security guard services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many security guard services did RevenueBase find based in the United States?
The saved snapshot records 2,890 matching company records, 113,404 tracked contacts and 8,273 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Security guard services by geography
- Security guard services based in the United Kingdom
- Security guard services based in Brazil
- Security guard services based in France
- Security guard services based in Canada
- Security guard services based in Germany
- Security guard services based in Italy
- Security guard services based in Australia
- Security guard services based in the Netherlands
- Security guard services based in South Africa
- Security guard services based in Mexico
- Security guard services based in Spain
- Security guard services based in Argentina
Cite this list
RevenueBase Data Team. Top 25 security guard services based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/security-guard-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security guard services based in the United Kingdom
- Security guard services based in Brazil
- Security guard services based in France
- Security guard services based in Canada
- Security guard services based in Germany
- Security guard services based in Italy
Company intelligence · public preview
Top 25 security guard services based in the United States
RevenueBase records 2,890 matching company records for security guard services based in the United States, with 113,404 tracked contacts and 8,273 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 security guard services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Securitas Security Services Usa, INCsecuritasinc.com HQ: Parsippany, MI, United StatesReported employees: 10001+ | Parsippany, MI, United States | 10001+ | Exact match | 40,551 contacts → |
“Securitas knows Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,040 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Inter-Con Securityicsecurity.com HQ: Pasadena, CA, United StatesReported employees: 10001+ | Pasadena, CA, United States | 10001+ | Exact match | 3,921 contacts → |
“Everywhere Security Matters™ Inter-Con is one of the largest and fastest-growing physical security and risk management companies in the world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Walden Securitywaldensecurity.com HQ: Chattanooga, VA, United StatesReported employees: 5,001-10,000 | Chattanooga, VA, United States | 5,001-10,000 | Exact match | 2,341 contacts → |
“Walden Security is the nation's largest privately held, family-owned and operated, American-owned security company.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Sunstates Securitysunstatessecurity.com HQ: Raleigh, TX, United StatesReported employees: 5,001-10,000 | Raleigh, TX, United States | 5,001-10,000 | Exact match | 1,740 contacts → |
“Sunstates Security, LLC is one of the industry's leading providers of contract security services with a differentiated approach to providing successful, cost-effective, quality…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Guardsmarkguardsmark.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,562 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Admiral Security Servicesadmiralsecurity.com HQ: Bethesda, United StatesReported employees: 5,001-10,000 | Bethesda, United States | 5,001-10,000 | Exact match | 1,547 contacts → |
“Admiral Security Services provides professional armed and unarmed uniformed security officers, unparalleled site management and unwavering corporate support that exceeds client…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | DSI Security Servicesdsisecurity.com HQ: Dothan, AL, United StatesReported employees: 1,001-5,000 | Dothan, AL, United States | 1,001-5,000 | Exact match | 1,277 contacts → |
“DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Titan Security Grouptitan-security.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,209 contacts → |
“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 description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | St. Moritz Security Services, INCsmssi.com HQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,168 contacts → |
“Founded in 1982, St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Arrow Securityarrowsecurity.com HQ: Smithtown, PA, United StatesReported employees: 5,001-10,000 | Smithtown, PA, United States | 5,001-10,000 | Exact match | 930 contacts → |
“Arrow Security stands as one of the nation's largest privately held security guard companies.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Securamericasecuramericallc.com HQ: Atlanta, GA, United StatesReported employees: 5,001-10,000 | Atlanta, GA, United States | 5,001-10,000 | Exact match | 835 contacts → |
“Now part of Allied Universal.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Akal Securityakalsecurity.com HQ: Espanola, NM, United StatesReported employees: 10001+ | Espanola, NM, United States | 10001+ | Exact match | 798 contacts → |
“Known for our responsiveness, innovation, and customer-focused service, Akal provides officers and specialized training to a broad range of clients.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Northeast Security INCnesecurity.com HQ: Westwood, MA, United StatesReported employees: 1,001-5,000 | Westwood, MA, United States | 1,001-5,000 | Exact match | 767 contacts → |
“Improving Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Professional Security Consultants, INCpscsite.com HQ: Los Angeles, CA, United StatesReported employees: 1,001-5,000 | Los Angeles, CA, United States | 1,001-5,000 | Exact match | 697 contacts → |
“Professional Security Consultants, Inc.(PSC) is a world-class provider of security guard services, patrol, investigations, backgrounds, consulting, security screening & specialty…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Mulligan Securitymulligansecurity.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 562 contacts → |
“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Champion National Securitychamp.net HQ: Richardson, NC, United StatesReported employees: 1,001-5,000 | Richardson, NC, United States | 1,001-5,000 | Exact match | 544 contacts → |
“COMMITTED PEOPLE.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ranger Americanrangeramerican.com HQ: San Juan, United StatesReported employees: 1,001-5,000 | San Juan, United States | 1,001-5,000 | Exact match | 540 contacts → |
“Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Valor Security Servicesvalorsecurity.com HQ: Marietta, GA, United StatesReported employees: 1,001-5,000 | Marietta, GA, United States | 1,001-5,000 | Exact match | 483 contacts → |
“As a leading provider of security services for retail, hospitality, and mixed-use properties throughout the United States since 1991, we have continually honed our approach to…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Summit Security Services, INCsummitsecurity.com HQ: Uniondale, NY, United StatesReported employees: 1,001-5,000 | Uniondale, NY, United States | 1,001-5,000 | Exact match | 455 contacts → |
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Kent Serviceskentservices.com HQ: North Miami Beach, NY, United StatesReported employees: 1,001-5,000 | North Miami Beach, NY, United States | 1,001-5,000 | Exact match | 450 contacts → |
“At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Universal Protection SVCuniversalpro.com HQ: Conshohocken, PA, United StatesReported employees: Not recorded | Conshohocken, PA, United States | Not recorded | Exact match | 401 contacts → |
“Universal Services of America combines an innovative mix of tradition with advanced technology to keep pace with the evolving security and janitorial needs of today's businesses.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Elite Security & Staffingelitesecuritystaffing.com HQ: San Diego, CA, United StatesReported employees: 5,001-10,000 | San Diego, CA, United States | 5,001-10,000 | Exact match | 390 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cambridge Security Services Corpcambridgesecurityservices.com HQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 364 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Iidon Security Associatesiidon.net HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 354 contacts → |
“iidon Security Associates provides premier security services catered to your company's needs.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,890 company matches
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Security guard services: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
2,873 records in the displayed employee bands.
17 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 2,890 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Security guard services by metro
- Security guard services in New York102
- Security guard services in Los Angeles98
- Security guard services in Houston66
- Security guard services in Miami57
- Security guard services in Chicago39
- Security guard services in Dallas38
- Security guard services in Atlanta36
- Security guard services in Las Vegas33
- Security guard services in Phoenix30
- Security guard services in Austin29
Questions about this company list
What does Exact match mean for security guard services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many security guard services did RevenueBase find based in the United States?
The saved snapshot records 2,890 matching company records, 113,404 tracked contacts and 8,273 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Security guard services by geography
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- Security guard services based in Australia
- Security guard services based in the Netherlands
- Security guard services based in South Africa
- Security guard services based in Mexico
- Security guard services based in Spain
- Security guard services based in Argentina
Cite this list
RevenueBase Data Team. Top 25 security guard services based in the United States. Snapshot: November 5, 2026. https://revenuebase.ai/companies/security-guard-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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