A breakdown of the 42K+ companies running Apollo.io.
Top industries
Information technology and services8.3K+
Hospitality and travel7.6K+
Professional and business services5.7K+
Retail trade2K+
Art, sports and recreation1.8K+
Financial services1.6K+
Industrial and manufacturing1.5K+
Transport1.5K+
No industry recorded: 5.9K+
Company size
1–1010,163 (37%)
11–507,660 (28%)
51–2505,765 (21%)
251–5001,774 (6%)
501–1,000694 (3%)
1,001–5,000997 (4%)
5,001–10,000251 (1%)
10,001+385 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 14K+
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Frequently asked questions
About the Apollo.io data on this page.
How many companies use Apollo.io?
Firmable holds confirmed Apollo.io detections for 42,137 distinct companies, 37,407 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Apollo.io?
Centuria Capital Group, Socure and EVgo are among the most prominent in the current set.
What industries use Apollo.io?
Information technology and services, hospitality and travel and professional and business services lead the set, across 19 industries in total.
What size companies use Apollo.io?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Apollo.io users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
37,407 companies were confirmed in the last 90 days. Last detection 14 October 2026.
