Company lists · Data refreshed September 2026
Top 25 School security companies based in the United States
RevenueBase identified 2,416 company matches for school security companies associated with the United States as of September 2026 and tracks 95,797 professional contacts across them, including 8,601 with verified work emails. Los Angeles is the largest hub.
This list covers company matches for school security companies 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 September 29, 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 school security companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,634 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 2 | 4,038 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 3 | 3,612 contacts → | ||||
Exact match “EVERYWHERE SECURITY MATTERS.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 4 | 3,592 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 5 | 1,375 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 6 | 1,190 contacts → | ||||
Exact match “DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 7 | 1,138 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 8 | 1,120 contacts → | ||||
Exact match “Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 9 | 1,062 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 10 | 849 contacts → | ||||
Exact match “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 11 | 797 contacts → | ||||
Exact match “Bay Alarm is a family-owned national security company in operation since 1946.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 12 | 626 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 13 | 514 contacts → | ||||
Exact match “COMMITTED PEOPLE.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 14 | 511 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 15 | 426 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 16 | 376 contacts → | ||||
Exact match “Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 17 | 346 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 · Sep 29, 2026 · View company records in RevenueBase | |||||
| 18 | 338 contacts → | ||||
Exact match “iidon Security Associates provides premier security services catered to your company's needs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 19 | 324 contacts → | ||||
Exact match “Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 20 | 320 contacts → | ||||
Exact match “United American Security was formed in 2010 to bring excellent regional security companies together.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 21 | 302 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 22 | 275 contacts → | ||||
Exact match “Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 23 | 254 contacts → | ||||
Exact match “Minuteman Security & Life Safety is a leading provider of enterprise security system technology solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 24 | 241 contacts → | ||||
Exact match “GuardTexas is a Texas-owned security services provider delivering professional, dependable protection since 1976.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase | |||||
| 25 | 238 contacts → | ||||
Exact match “Since 1946, GSSC (General Security Services Corporation) has stood as a pillar of trust and professionalism in the Minnesota and Midwest security landscape.” Recorded in the RevenueBase company graph · Sep 29, 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 “school security companies”. 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 2,416 school security companies based in the United States
See the full list, filter by size, metro and specialty, and access 8,601 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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School security companies based in the United States at a glance
As of Sep 29, 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 2,416 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 “school security companies” 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 8,601 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 September 29, 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.
School security companies by metro
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 “school security companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many school security companies are there based in the United States?
RevenueBase identified 2,416 company matches for school security companies associated with the United States as of September 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 school security companies?
Los Angeles leads with 74 company records, followed by New York (70) and Houston (59).
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 8,601 professional contacts with verified work emails tracked across these 2,416 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 September 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 2,416 school security companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
School security companies by geography
- School security companies based in Toronto, Canada
- School security companies based in London, United Kingdom
- School security companies based in Chicago, United States
- School security companies based in Dallas, United States
- School security companies based in Houston, United States
- School security companies based in Los Angeles, United States
- School security companies based in Miami, United States
- School security companies based in New York, United States
- School security companies based in Phoenix, United States
- School security companies based in Australia
- School security companies based in Belgium
- School security companies based in Brazil
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
- School security companies based in Toronto, Canada
- School security companies based in London, United Kingdom
- School security companies based in Chicago, United States
- School security companies based in Dallas, United States
- School security companies based in Houston, United States
- School security companies based in Los Angeles, United States
Company intelligence · public preview
Top 25 school security companies 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 2,416 matching company records for school security companies based in the United States, with 95,797 tracked contacts and 8,601 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: September 29, 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 school security companies 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, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 29, 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 | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 29, 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 | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Guardsmarkguardsmark.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  DSI Security Servicesdsisecurity.comHQ: Dothan, AL, United StatesReported employees: 1,001-5,000 | Dothan, AL, United States | 1,001-5,000 | Exact match | 1,190 contacts → |
“DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Titan Security Grouptitan-security.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,138 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  PER MAR Security Servicespermarsecurity.comHQ: Davenport, IA, United StatesReported employees: 1,001-5,000 | Davenport, IA, United States | 1,001-5,000 | Exact match | 1,120 contacts → |
“Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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 | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Security 101security101.comHQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 849 contacts → |
“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  BAY Alarm Companybayalarm.comHQ: Concord, CA, United StatesReported employees: 1,001-5,000 | Concord, CA, United States | 1,001-5,000 | Exact match | 797 contacts → |
“Bay Alarm is a family-owned national security company in operation since 1946.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  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 | 626 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Champion National Securitychamp.netHQ: Richardson, TX, United StatesReported employees: 1,001-5,000 | Richardson, TX, United States | 1,001-5,000 | Exact match | 514 contacts → |
“COMMITTED PEOPLE.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Ranger Americanrangeramerican.comHQ: San Juan, United StatesReported employees: 1,001-5,000 | San Juan, United States | 1,001-5,000 | Exact match | 511 contacts → |
“Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Summit Security Services, INCsummitsecurity.comHQ: Uniondale, NY, United StatesReported employees: 1,001-5,000 | Uniondale, NY, United States | 1,001-5,000 | Exact match | 426 contacts → |
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  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 | 376 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  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 | 346 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Iidon Security Associatesiidon.netHQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 338 contacts → |
“iidon Security Associates provides premier security services catered to your company's needs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  ADS Securityadssecurity.comHQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 324 contacts → |
“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  United American Security, LLC UASteamuas.comHQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 320 contacts → |
“United American Security was formed in 2010 to bring excellent regional security companies together.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  AFA Protective Systems, INCafap.comHQ: Syosset, NY, United StatesReported employees: 201-500 | Syosset, NY, United States | 201-500 | Exact match | 302 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 |  Doyle Security Services, Inc. DSSdoylesecurityservices.comHQ: Rockville Centre, NY, United StatesReported employees: 1,001-5,000 | Rockville Centre, NY, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Minuteman Security & Life Safetyminutemanst.comHQ: Andover, MA, United StatesReported employees: 501-1,000 | Andover, MA, United States | 501-1,000 | Exact match | 254 contacts → |
“Minuteman Security & Life Safety is a leading provider of enterprise security system technology solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Guardtexas, INCguardtexas.comHQ: Richardson, TX, United StatesReported employees: 501-1,000 | Richardson, TX, United States | 501-1,000 | Exact match | 241 contacts → |
“GuardTexas is a Texas-owned security services provider delivering professional, dependable protection since 1976.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Minneapolis, MN, United StatesReported employees: 201-500 | Minneapolis, MN, United States | 201-500 | Exact match | 238 contacts → |
“Since 1946, GSSC (General Security Services Corporation) has stood as a pillar of trust and professionalism in the Minnesota and Midwest security landscape.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,416 company matches
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School security companies: dataset insights
September 29, 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
2,406 records in the displayed employee bands.
10 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 2,416 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: September 29, 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 ↗
School security companies by metro
Questions about this company list
What does Exact match mean for school security companies?
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 school security companies did RevenueBase find based in the United States?
The saved snapshot records 2,416 matching company records, 95,797 tracked contacts and 8,601 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: September 29, 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
School security companies by geography
- School security companies based in Toronto, Canada
- School security companies based in London, United Kingdom
- School security companies based in Chicago, United States
- School security companies based in Dallas, United States
- School security companies based in Houston, United States
- School security companies based in Los Angeles, United States
- School security companies based in Miami, United States
- School security companies based in New York, United States
- School security companies based in Phoenix, United States
- School security companies based in Australia
- School security companies based in Belgium
- School security companies based in Brazil
Cite this list
RevenueBase Data Team. Top 25 school security companies based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/school-security-companies/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
- School security companies based in Toronto, Canada
- School security companies based in London, United Kingdom
- School security companies based in Chicago, United States
- School security companies based in Dallas, United States
- School security companies based in Houston, United States
- School security companies based in Los Angeles, United States
Company intelligence · public preview
Top 25 school security companies based in the United States
RevenueBase records 2,416 matching company records for school security companies based in the United States, with 95,797 tracked contacts and 8,601 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: September 29, 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 school security companies 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, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 29, 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 | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 29, 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 | 3,612 contacts → |
“EVERYWHERE SECURITY MATTERS.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Guardsmarkguardsmark.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | DSI Security Servicesdsisecurity.com HQ: Dothan, AL, United StatesReported employees: 1,001-5,000 | Dothan, AL, United States | 1,001-5,000 | Exact match | 1,190 contacts → |
“DSI Security Services offers armed and unarmed uniformed security guard services.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | 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 | 1,138 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | PER MAR Security Servicespermarsecurity.com HQ: Davenport, IA, United StatesReported employees: 1,001-5,000 | Davenport, IA, United States | 1,001-5,000 | Exact match | 1,120 contacts → |
“Per Mar Security Services is the largest full-service security solutions provider in the Midwest.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Security 101security101.com HQ: West Palm Beach, FL, United StatesReported employees: 501-1,000 | West Palm Beach, FL, United States | 501-1,000 | Exact match | 849 contacts → |
“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | BAY Alarm Companybayalarm.com HQ: Concord, CA, United StatesReported employees: 1,001-5,000 | Concord, CA, United States | 1,001-5,000 | Exact match | 797 contacts → |
“Bay Alarm is a family-owned national security company in operation since 1946.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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 | 626 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 · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Champion National Securitychamp.net HQ: Richardson, TX, United StatesReported employees: 1,001-5,000 | Richardson, TX, United States | 1,001-5,000 | Exact match | 514 contacts → |
“COMMITTED PEOPLE.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Ranger Americanrangeramerican.com HQ: San Juan, United StatesReported employees: 1,001-5,000 | San Juan, United States | 1,001-5,000 | Exact match | 511 contacts → |
“Founded in 1982, Ranger American is a professional security organization with an extensive background in the security and investigation fields.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 | 426 contacts → |
“Established in 1976, Summit is one of the largest privately owned security services firms in the United States.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | 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 | 376 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | 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 | 346 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Iidon Security Associatesiidon.net HQ: Dallas, TX, United StatesReported employees: 501-1,000 | Dallas, TX, United States | 501-1,000 | Exact match | 338 contacts → |
“iidon Security Associates provides premier security services catered to your company's needs.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | ADS Securityadssecurity.com HQ: Nashville, TN, United StatesReported employees: 201-500 | Nashville, TN, United States | 201-500 | Exact match | 324 contacts → |
“Headquartered in Nashville, TN, with branches throughout the Southeastern United States, ADS Security, a Vector Security company, is the 20th largest electronic security company…” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | United American Security, LLC UASteamuas.com HQ: Raleigh, NC, United StatesReported employees: 1,001-5,000 | Raleigh, NC, United States | 1,001-5,000 | Exact match | 320 contacts → |
“United American Security was formed in 2010 to bring excellent regional security companies together.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | AFA Protective Systems, INCafap.com HQ: Syosset, NY, United StatesReported employees: 201-500 | Syosset, NY, United States | 201-500 | Exact match | 302 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 22 | Doyle Security Services, Inc. DSSdoylesecurityservices.com HQ: Rockville Centre, NY, United StatesReported employees: 1,001-5,000 | Rockville Centre, NY, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Minuteman Security & Life Safetyminutemanst.com HQ: Andover, MA, United StatesReported employees: 501-1,000 | Andover, MA, United States | 501-1,000 | Exact match | 254 contacts → |
“Minuteman Security & Life Safety is a leading provider of enterprise security system technology solutions.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Guardtexas, INCguardtexas.com HQ: Richardson, TX, United StatesReported employees: 501-1,000 | Richardson, TX, United States | 501-1,000 | Exact match | 241 contacts → |
“GuardTexas is a Texas-owned security services provider delivering professional, dependable protection since 1976.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Minneapolis, MN, United StatesReported employees: 201-500 | Minneapolis, MN, United States | 201-500 | Exact match | 238 contacts → |
“Since 1946, GSSC (General Security Services Corporation) has stood as a pillar of trust and professionalism in the Minnesota and Midwest security landscape.” Recorded description excerpt · September 29, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 2,416 company matches
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School security companies: dataset insights
September 29, 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
2,406 records in the displayed employee bands.
10 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 2,416 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: September 29, 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 ↗
School security companies by metro
Questions about this company list
What does Exact match mean for school security companies?
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 school security companies did RevenueBase find based in the United States?
The saved snapshot records 2,416 matching company records, 95,797 tracked contacts and 8,601 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: September 29, 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
School security companies by geography
- School security companies based in Toronto, Canada
- School security companies based in London, United Kingdom
- School security companies based in Chicago, United States
- School security companies based in Dallas, United States
- School security companies based in Houston, United States
- School security companies based in Los Angeles, United States
- School security companies based in Miami, United States
- School security companies based in New York, United States
- School security companies based in Phoenix, United States
- School security companies based in Australia
- School security companies based in Belgium
- School security companies based in Brazil
Cite this list
RevenueBase Data Team. Top 25 school security companies based in the United States. Snapshot: September 29, 2026. https://revenuebase.ai/companies/school-security-companies/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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