Company lists · Data refreshed November 2026
Top 25 Security businesses based in the United States
RevenueBase identified 11,258 company matches for security businesses associated with the United States as of November 2026 and tracks 386,607 professional contacts across them, including 54,776 with verified work emails. New York is the largest hub.
This list covers company matches for security businesses 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 6, 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 businesses based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 66,203 contacts → | ||||
Exact match “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 40,551 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 4,263 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 4,090 contacts → | ||||
Exact match “Contemporary Services Corporation (CSC) is recognized worldwide as the pioneer, expert and only employee owned company in the crowd management field.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 4,040 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 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 6, 2026 · View company records in RevenueBase | |||||
| 7 | 2,754 contacts → | ||||
Exact match “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 2,579 contacts → | ||||
Exact match “The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 2,393 contacts → | ||||
Exact match “Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 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 6, 2026 · View company records in RevenueBase | |||||
| 11 | 2,178 contacts → | ||||
Exact match “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 2,136 contacts → | ||||
Exact match “Pinkerton, established in 1850 by Allan Pinkerton, stands as a leading global provider of security and risk management solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 1,928 contacts → | ||||
Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 1,872 contacts → | ||||
Exact match “Whelan’s commitment to quality and service has made us one of the foremost respected, successful and fastest growing companies in the industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 1,811 contacts → | ||||
Exact match “HSS is now Tarian!” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 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 6, 2026 · View company records in RevenueBase | |||||
| 17 | 1,713 contacts → | ||||
Exact match “Pye-Barker Fire & Safety is the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 1,562 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 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 6, 2026 · View company records in RevenueBase | |||||
| 20 | 1,540 contacts → | ||||
Exact match “Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 1,536 contacts → | ||||
Exact match “Since 1994, Metro One has grown from a local, guard-based security firm into a nationally recognized leader in retail loss prevention-trusted by 8 of the Top 10 U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 1,467 contacts → | ||||
Exact match “As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 1,365 contacts → | ||||
Exact match “Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 1,330 contacts → | ||||
Exact match “More than a provider, we’re an active partner.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 1,288 contacts → | ||||
Exact match “Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.” Recorded in the RevenueBase company graph · Nov 6, 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 businesses”. 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 11,258 security businesses based in the United States
See the full list, filter by size, metro and specialty, and access 54,776 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Security businesses based in the United States at a glance
As of Nov 6, 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 11,258 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 businesses” 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 54,776 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 6, 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 businesses by metro
- Security businesses in New York279
- Security businesses in Houston235
- Security businesses in Los Angeles195
- Security businesses in Miami182
- Security businesses in Atlanta128
- Security businesses in Dallas128
- Security businesses in Chicago122
- Security businesses in Austin115
- Security businesses in Phoenix99
- Security businesses in Las Vegas96
- Security businesses in Orlando92
- Security businesses in Denver81
- Security businesses in San Antonio79
- Security businesses in San Diego75
- Security businesses in Tampa75
- Security businesses in Charlotte72
- Security businesses in San Jose60
- Security businesses in Sacramento57
- Security businesses in San Francisco55
- Security businesses in Indianapolis54
- Security businesses in Jacksonville52
- Security businesses in Seattle52
- Security businesses in Washington52
- Security businesses in Nashville49
- Security businesses in Baltimore47
- Security businesses in Brooklyn44
- Security businesses in Columbus43
- Security businesses in Philadelphia42
- Security businesses in Portland41
- Security businesses in St. Louis39
- Security businesses in Wilmington38
- Security businesses in Fort Lauderdale37
- Security businesses in Colorado Springs36
- Security businesses in Albuquerque35
- Security businesses in Boston35
- Security businesses in Columbia35
- Security businesses in Louisville35
- Security businesses in Memphis35
- Security businesses in Raleigh35
- Security businesses in Boca Raton33
- Security businesses in Irvine33
- Security businesses in Scottsdale33
- Security businesses in Cleveland32
- Security businesses in Fort Worth32
- Security businesses in Minneapolis32
- Security businesses in Tempe31
- Security businesses in Cincinnati30
- Security businesses in Pittsburgh30
- Security businesses in Arlington29
- Security businesses in Richmond29
- Security businesses in Aurora28
- Security businesses in Marietta28
- Security businesses in West Palm Beach28
- Security businesses in Kansas City27
- Security businesses in Salt Lake City27
- Security businesses in Springfield27
- Security businesses in Tucson26
- Security businesses in Beverly Hills25
- Security businesses in Fresno25
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 businesses”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security businesses are there based in the United States?
RevenueBase identified 11,258 company matches for security businesses 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?
Allied Universal tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most security businesses?
New York leads with 279 company records, followed by Houston (235) and Los Angeles (195).
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 54,776 professional contacts with verified work emails tracked across these 11,258 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 11,258 security businesses based in the United States. Start with a free account, no credit card.
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Security businesses by geography
- Security businesses based in the United Kingdom
- Security businesses based in Brazil
- Security businesses based in France
- Security businesses based in Canada
- Security businesses based in Germany
- Security businesses based in Italy
- Security businesses based in Australia
- Security businesses based in the Netherlands
- Security businesses based in Mexico
- Security businesses based in South Africa
- Security businesses based in Spain
- Security businesses based in Argentina
Browse the directory
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
Company intelligence · public preview
Top 25 security businesses 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 11,258 matching company records for security businesses based in the United States, with 386,607 tracked contacts and 54,776 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 6, 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 businesses 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 |  Allied Universalaus.comHQ: Irvine, IL, United StatesReported employees: 10001+ | Irvine, IL, United States | 10001+ | Exact match | 66,203 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  CSCcsc-usa.comHQ: Northridge, CA, United StatesReported employees: 10001+ | Northridge, CA, United States | 10001+ | Exact match | 4,090 contacts → |
“Contemporary Services Corporation (CSC) is recognized worldwide as the pioneer, expert and only employee owned company in the crowd management field.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Automated Systems Design, INCasd-usa.comHQ: Alpharetta, GA, United StatesReported employees: Not recorded | Alpharetta, GA, United States | Not recorded | Exact match | 2,754 contacts → |
“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Culver City, NY, United StatesReported employees: 5,001-10,000 | Culver City, NY, United States | 5,001-10,000 | Exact match | 2,579 contacts → |
“The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Andy Frain Servicesandyfrain.comHQ: Aurora, IL, United StatesReported employees: 5,001-10,000 | Aurora, IL, United States | 5,001-10,000 | Exact match | 2,393 contacts → |
“Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Everoneveronsolutions.comHQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 2,178 contacts → |
“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Pinkerton Comprehensive Risk Managementpinkerton.comHQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 2,136 contacts → |
“Pinkerton, established in 1850 by Allan Pinkerton, stands as a leading global provider of security and risk management solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Paragon Systems INCparasys.comHQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Whelan Securitywhelansecurity.comHQ: St. Louis, KY, United StatesReported employees: 5,001-10,000 | St. Louis, KY, United States | 5,001-10,000 | Exact match | 1,872 contacts → |
“Whelan’s commitment to quality and service has made us one of the foremost respected, successful and fastest growing companies in the industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  HSStariangroup.comHQ: Denver, CO, United StatesReported employees: 5,001-10,000 | Denver, CO, United States | 5,001-10,000 | Exact match | 1,811 contacts → |
“HSS is now Tarian!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Pye-Barker Fire & Safetypyebarkerfs.comHQ: Alpharetta, GA, United StatesReported employees: 5,001-10,000 | Alpharetta, GA, United States | 5,001-10,000 | Exact match | 1,713 contacts → |
“Pye-Barker Fire & Safety is the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Weiser Security Services, INCweisersecurity.comHQ: New Orleans, LA, United StatesReported employees: 1,001-5,000 | New Orleans, LA, United States | 1,001-5,000 | Exact match | 1,540 contacts → |
“Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Metro ONE Securitymetroone.comHQ: Staten Island, MA, United StatesReported employees: 5,001-10,000 | Staten Island, MA, United States | 5,001-10,000 | Exact match | 1,536 contacts → |
“Since 1994, Metro One has grown from a local, guard-based security firm into a nationally recognized leader in retail loss prevention-trusted by 8 of the Top 10 U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Protection 1 Security Solutionsprotection1.comHQ: Romeoville, IL, United StatesReported employees: 1,001-5,000 | Romeoville, IL, United States | 1,001-5,000 | Exact match | 1,467 contacts → |
“As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Vector Securityvectorsecurity.comHQ: Warrendale, TX, United StatesReported employees: 1,001-5,000 | Warrendale, TX, United States | 1,001-5,000 | Exact match | 1,365 contacts → |
“Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Signalteamsignal.comHQ: Omaha, NE, United StatesReported employees: 1,001-5,000 | Omaha, NE, United States | 1,001-5,000 | Exact match | 1,330 contacts → |
“More than a provider, we’re an active partner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Safe Haven Security Services, LLCmysafehaven.comHQ: North Kansas City, MO, United StatesReported employees: 1,001-5,000 | North Kansas City, MO, United States | 1,001-5,000 | Exact match | 1,288 contacts → |
“Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 11,258 company matches
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Security businesses: dataset insights
November 6, 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
11,207 records in the displayed employee bands.
51 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 11,258 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 6, 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 businesses by metro
- Security businesses in New York279
- Security businesses in Houston235
- Security businesses in Los Angeles195
- Security businesses in Miami182
- Security businesses in Atlanta128
- Security businesses in Dallas128
- Security businesses in Chicago122
- Security businesses in Austin115
- Security businesses in Phoenix99
- Security businesses in Las Vegas96
- Security businesses in Orlando92
- Security businesses in Denver81
- Security businesses in San Antonio79
- Security businesses in San Diego75
- Security businesses in Tampa75
- Security businesses in Charlotte72
- Security businesses in San Jose60
- Security businesses in Sacramento57
- Security businesses in San Francisco55
- Security businesses in Indianapolis54
- Security businesses in Jacksonville52
- Security businesses in Seattle52
- Security businesses in Washington52
- Security businesses in Nashville49
- Security businesses in Baltimore47
- Security businesses in Brooklyn44
- Security businesses in Columbus43
- Security businesses in Philadelphia42
- Security businesses in Portland41
- Security businesses in St. Louis39
- Security businesses in Wilmington38
- Security businesses in Fort Lauderdale37
- Security businesses in Colorado Springs36
- Security businesses in Albuquerque35
- Security businesses in Boston35
- Security businesses in Columbia35
- Security businesses in Louisville35
- Security businesses in Memphis35
- Security businesses in Raleigh35
- Security businesses in Boca Raton33
- Security businesses in Irvine33
- Security businesses in Scottsdale33
- Security businesses in Cleveland32
- Security businesses in Fort Worth32
- Security businesses in Minneapolis32
- Security businesses in Tempe31
- Security businesses in Cincinnati30
- Security businesses in Pittsburgh30
- Security businesses in Arlington29
- Security businesses in Richmond29
- Security businesses in Aurora28
- Security businesses in Marietta28
- Security businesses in West Palm Beach28
- Security businesses in Kansas City27
- Security businesses in Salt Lake City27
- Security businesses in Springfield27
- Security businesses in Tucson26
- Security businesses in Beverly Hills25
- Security businesses in Fresno25
Questions about this company list
What does Exact match mean for security businesses?
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 businesses did RevenueBase find based in the United States?
The saved snapshot records 11,258 matching company records, 386,607 tracked contacts and 54,776 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 6, 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 businesses by geography
- Security businesses based in the United Kingdom
- Security businesses based in Brazil
- Security businesses based in France
- Security businesses based in Canada
- Security businesses based in Germany
- Security businesses based in Italy
- Security businesses based in Australia
- Security businesses based in the Netherlands
- Security businesses based in Mexico
- Security businesses based in South Africa
- Security businesses based in Spain
- Security businesses based in Argentina
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 security businesses based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/security-businesses/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
Company intelligence · public preview
Top 25 security businesses based in the United States
RevenueBase records 11,258 matching company records for security businesses based in the United States, with 386,607 tracked contacts and 54,776 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 6, 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 businesses 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 | Allied Universalaus.com HQ: Irvine, IL, United StatesReported employees: 10001+ | Irvine, IL, United States | 10001+ | Exact match | 66,203 contacts → |
“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | CSCcsc-usa.com HQ: Northridge, CA, United StatesReported employees: 10001+ | Northridge, CA, United States | 10001+ | Exact match | 4,090 contacts → |
“Contemporary Services Corporation (CSC) is recognized worldwide as the pioneer, expert and only employee owned company in the crowd management field.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Automated Systems Design, INCasd-usa.com HQ: Alpharetta, GA, United StatesReported employees: Not recorded | Alpharetta, GA, United States | Not recorded | Exact match | 2,754 contacts → |
“Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Culver City, NY, United StatesReported employees: 5,001-10,000 | Culver City, NY, United States | 5,001-10,000 | Exact match | 2,579 contacts → |
“The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Andy Frain Servicesandyfrain.com HQ: Aurora, IL, United StatesReported employees: 5,001-10,000 | Aurora, IL, United States | 5,001-10,000 | Exact match | 2,393 contacts → |
“Andy Frain Services.America's leading provider of integrated solutions to security and events needs for over 90 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Everoneveronsolutions.com HQ: Irving, TX, United StatesReported employees: 1,001-5,000 | Irving, TX, United States | 1,001-5,000 | Exact match | 2,178 contacts → |
“Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Pinkerton Comprehensive Risk Managementpinkerton.com HQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 2,136 contacts → |
“Pinkerton, established in 1850 by Allan Pinkerton, stands as a leading global provider of security and risk management solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Paragon Systems INCparasys.com HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Whelan Securitywhelansecurity.com HQ: St. Louis, KY, United StatesReported employees: 5,001-10,000 | St. Louis, KY, United States | 5,001-10,000 | Exact match | 1,872 contacts → |
“Whelan’s commitment to quality and service has made us one of the foremost respected, successful and fastest growing companies in the industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HSStariangroup.com HQ: Denver, CO, United StatesReported employees: 5,001-10,000 | Denver, CO, United States | 5,001-10,000 | Exact match | 1,811 contacts → |
“HSS is now Tarian!” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pye-Barker Fire & Safetypyebarkerfs.com HQ: Alpharetta, GA, United StatesReported employees: 5,001-10,000 | Alpharetta, GA, United States | 5,001-10,000 | Exact match | 1,713 contacts → |
“Pye-Barker Fire & Safety is the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | 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 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Weiser Security Services, INCweisersecurity.com HQ: New Orleans, LA, United StatesReported employees: 1,001-5,000 | New Orleans, LA, United States | 1,001-5,000 | Exact match | 1,540 contacts → |
“Weiser Security Services is the 11th largest security service provider in the U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Metro ONE Securitymetroone.com HQ: Staten Island, MA, United StatesReported employees: 5,001-10,000 | Staten Island, MA, United States | 5,001-10,000 | Exact match | 1,536 contacts → |
“Since 1994, Metro One has grown from a local, guard-based security firm into a nationally recognized leader in retail loss prevention-trusted by 8 of the Top 10 U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Protection 1 Security Solutionsprotection1.com HQ: Romeoville, IL, United StatesReported employees: 1,001-5,000 | Romeoville, IL, United States | 1,001-5,000 | Exact match | 1,467 contacts → |
“As of May 2016, Protection 1 and ADT merged together to become the leading company in the electronic security industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Vector Securityvectorsecurity.com HQ: Warrendale, TX, United StatesReported employees: 1,001-5,000 | Warrendale, TX, United States | 1,001-5,000 | Exact match | 1,365 contacts → |
“Vector Security® has protected people and property by providing intelligent security solutions tailored to the needs of the customer for more than 50 years.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Signalteamsignal.com HQ: Omaha, NE, United StatesReported employees: 1,001-5,000 | Omaha, NE, United States | 1,001-5,000 | Exact match | 1,330 contacts → |
“More than a provider, we’re an active partner.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Safe Haven Security Services, LLCmysafehaven.com HQ: North Kansas City, MO, United StatesReported employees: 1,001-5,000 | North Kansas City, MO, United States | 1,001-5,000 | Exact match | 1,288 contacts → |
“Established in Safe Haven Security has grown to become the nation’s largest ADT-authorized dealer, trusted by homeowners and businesses across the country.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 11,258 company matches
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Security businesses: dataset insights
November 6, 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
11,207 records in the displayed employee bands.
51 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 11,258 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 6, 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 businesses by metro
- Security businesses in New York279
- Security businesses in Houston235
- Security businesses in Los Angeles195
- Security businesses in Miami182
- Security businesses in Atlanta128
- Security businesses in Dallas128
- Security businesses in Chicago122
- Security businesses in Austin115
- Security businesses in Phoenix99
- Security businesses in Las Vegas96
- Security businesses in Orlando92
- Security businesses in Denver81
- Security businesses in San Antonio79
- Security businesses in San Diego75
- Security businesses in Tampa75
- Security businesses in Charlotte72
- Security businesses in San Jose60
- Security businesses in Sacramento57
- Security businesses in San Francisco55
- Security businesses in Indianapolis54
- Security businesses in Jacksonville52
- Security businesses in Seattle52
- Security businesses in Washington52
- Security businesses in Nashville49
- Security businesses in Baltimore47
- Security businesses in Brooklyn44
- Security businesses in Columbus43
- Security businesses in Philadelphia42
- Security businesses in Portland41
- Security businesses in St. Louis39
- Security businesses in Wilmington38
- Security businesses in Fort Lauderdale37
- Security businesses in Colorado Springs36
- Security businesses in Albuquerque35
- Security businesses in Boston35
- Security businesses in Columbia35
- Security businesses in Louisville35
- Security businesses in Memphis35
- Security businesses in Raleigh35
- Security businesses in Boca Raton33
- Security businesses in Irvine33
- Security businesses in Scottsdale33
- Security businesses in Cleveland32
- Security businesses in Fort Worth32
- Security businesses in Minneapolis32
- Security businesses in Tempe31
- Security businesses in Cincinnati30
- Security businesses in Pittsburgh30
- Security businesses in Arlington29
- Security businesses in Richmond29
- Security businesses in Aurora28
- Security businesses in Marietta28
- Security businesses in West Palm Beach28
- Security businesses in Kansas City27
- Security businesses in Salt Lake City27
- Security businesses in Springfield27
- Security businesses in Tucson26
- Security businesses in Beverly Hills25
- Security businesses in Fresno25
Questions about this company list
What does Exact match mean for security businesses?
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 businesses did RevenueBase find based in the United States?
The saved snapshot records 11,258 matching company records, 386,607 tracked contacts and 54,776 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 6, 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 businesses by geography
- Security businesses based in the United Kingdom
- Security businesses based in Brazil
- Security businesses based in France
- Security businesses based in Canada
- Security businesses based in Germany
- Security businesses based in Italy
- Security businesses based in Australia
- Security businesses based in the Netherlands
- Security businesses based in Mexico
- Security businesses based in South Africa
- Security businesses based in Spain
- Security businesses based in Argentina
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 security businesses based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/security-businesses/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗