Company lists · Data refreshed September 2026
Top 21 Security and access control companies based in Indianapolis, United States
RevenueBase identified 37 security and access control companies headquartered in Indianapolis, United States as of September 2026 and tracks 1,360 professional contacts across them, including 463 with verified work emails. New York is the largest hub.
This list covers security and access control companies headquartered in Indianapolis, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 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 21 largest security and access control companies based in Indianapolis, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 834 | ||||
“Koorsen Fire & Security is a family-owned operation that has kept homes and businesses safe for more than 70 years.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 302 | ||||
“Sonitrol is the industry leader in verified electronic security and provides customers with a single source of integrated security solutions for intrusion, video, access and fire.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Security ForcePartial evidence | 36 | |||
“Commercial and Residential Security system design and installation, including camera surveillance and 24/7 monitoring of all doors and windows.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 21 | ||||
“Oak offers a full range of access control solutions for facilities of all sizes, providing the appropriate level of access and protection throughout your property.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Itech DigitalPartial evidence | 17 | |||
“iTech Digital Security Solutions designs customized video surveillance solutions based on your unique business challenges to help you reduce risk, enhance safety, and maximize…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | Security Automation Systems, INCStrong evidence | 16 | |||
“Security Automation Systems, Inc.(SAS) specializes in providing and installing electronic safety & control systems for correctional and other government facilities.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | SitewisePartial evidence | 15 | |||
“SiteWise provides high-quality, value-driven communications, audio-visual and building security systems in the Midwest and across the United States to meet our customers' needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Nelson AlarmPartial evidence | 11 | |||
“Since 1991, Nelson Alarm has delivered “Only the Best” in security solutions for homes and businesses throughout Indianapolis.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Hoosier SecurityPartial evidence | 11 | |||
“Hoosier Security Solutions is a Nationally Certified MBE.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 | ||||
“It’s our attention to details, scheduling of timelines and project management that makes APTEK stand out from the rest.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | Secure Marketing SolutionsPartial evidence | 4 | |||
“Secure Marketing Solutions, established in February, 2010, offers a dedicated professional sales team with a combined 50+ years of experience in security systems sales and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Security Data Systems, INCPartial evidence | 3 | |||
“Security Data Systems is a central Indiana company based out of Indianapolis, serving the technology needs of like-minded businesses.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3 | ||||
“From one-off projects and applications to immediate and on-going initiatives, BDIS can augment your existing technology team or serve as your de facto professional service…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 | ||||
“Providing peace of mind with security solutions for a range of needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | USA Alarm Service, INCIndirect evidence | 3 | |||
“At USA Alarm Service, we believe that your property and loved ones deserve the highest level of protection.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | AV DesignersStrong evidence | 2 | |||
“Welcome to AV Designers, your premier Audio, Video, Data Network, Automation, and Closed Circuit Security contractor in the commercial marketplace.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | Multiguard CorporationPartial evidence | 2 | |||
“Founded in 1976, Multiguard Corporation provides electronic security and life-safety systems.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | MAX Video & SecurityIndirect evidence | 1 | |||
“Ready for a service provider to exceed expectations on your next technology project?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | General Alarm INCIndirect evidence | 1 | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Protecht Home SecurityPartial evidence | 1 | |||
“ProTECHt your local Brinks Home SecurityTM Authorized Partner has been in the security business for over a decade servicing residential and commercial customers!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | Secured Home SolutionsIndirect evidence | 1 | |||
“SHS is Indiana's top local ADT Authorized Dealer.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 21 of 37 security and access control companies based in Indianapolis, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 463 reachable decision-makers.
Free signup · no credit card
Security and access control companies based in Indianapolis, United States at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Indianapolis, over 37 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security and access control companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Indianapolis, United States whose own description of what they do matches “security and access control companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security and access control companies, and records with no verified work email. Companies headquartered outside Indianapolis are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 463 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security and access control companies by metro in the United States
- Security and access control companies in New York112
- Security and access control companies in Houston109
- Security and access control companies in Miami74
- Security and access control companies in Los Angeles71
- Security and access control companies in Dallas63
- Security and access control companies in Atlanta49
- Security and access control companies in Phoenix45
- Security and access control companies in Austin38
- Security and access control companies in Las Vegas38
- Security and access control companies in Chicago37
- Security and access control companies in Indianapolis37
- Security and access control companies in Tampa33
- Security and access control companies in Charlotte31
- Security and access control companies in San Antonio31
- Security and access control companies in Brooklyn30
- Security and access control companies in Denver27
- Security and access control companies in Jacksonville27
- Security and access control companies in San Diego27
- Security and access control companies in Orlando25
- Security and access control companies in San Jose25
Frequently asked
How many security and access control companies are there based in Indianapolis, United States?
RevenueBase identified 37 security and access control companies headquartered in Indianapolis, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Koorsen Fire And Security, headquartered in Indianapolis, tops this list with the largest team on record.
Which city has the most security and access control companies?
New York leads with 112 headquartered companies, followed by Houston (109) and Miami (74).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 463 verified decision-maker contacts tracked across these 37 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 37 security and access control companies based in Indianapolis, United States. Start with a free account, no credit card.
Get the full listRelated lists
Security and access control companies by geography
- Security and access control companies based in the United States
- Security and access control companies based in the United Kingdom
- Security and access control companies based in Brazil
- Security and access control companies based in France
- Security and access control companies based in Australia
- Security and access control companies based in Germany
- Security and access control companies based in Canada
- Security and access control companies based in Italy
- Security and access control companies based in South Africa
- Security and access control companies based in Spain
- Security and access control companies based in the Netherlands
- Security and access control companies based in Mexico
Browse the directory
Browse: Companies home · Security and access control companies in United States · All United States lists · All Security and access control companies lists · New lists
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security and access control companies based in the United States
- Security and access control companies based in the United Kingdom
- Security and access control companies based in Brazil
- Security and access control companies based in France
- Security and access control companies based in Australia
- Security and access control companies based in Germany