A breakdown of the 127 companies running CastleBranch.
Top industries
Education and training77
Health and wellness10
Construction and building6
Not for profit6
Art, sports and recreation5
Government and public services4
Professional and business services4
Agriculture, forestry and fishing2
No industry recorded: 5
Company size
1–103 (2%)
11–505 (4%)
51–25016 (13%)
251–50014 (12%)
501–1,00014 (12%)
1,001–5,00036 (30%)
5,001–10,00016 (13%)
10,001+16 (13%)
Share of companies with a recorded size, by employees.
No size recorded: 7
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Frequently asked questions
About the CastleBranch data on this page.
How many companies use CastleBranch?
Firmable holds confirmed CastleBranch detections for 127 distinct companies, 19 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use CastleBranch?
Lctcs, ARMA International and Sacramento Ultrasound Institute are among the most prominent in the current set.
What industries use CastleBranch?
Education and training, health and wellness and construction and building lead the set, across 16 industries in total.
What size companies use CastleBranch?
Adoption concentrates in the 1,001-5,000 employee band, across the companies whose size is recorded.
Where are CastleBranch users based?
The United States, Australia, Canada and Indonesia account for most detections, across 13 countries.
How current is this data?
19 companies were confirmed in the last 90 days. Last detection 6 September 2026.
