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38,661 companies in IT in California.
Explore 38,661 IT in California listed with contact details, employee size, revenue, and NAICS/SIC codes. Compare suppliers and service providers side by side and reach the right companies directly, or view the same industry in IT in New York, IT in Texas, IT in Florida.
Largest IT in California companies by revenue
The highest-revenue companies in this directory. Open any profile for its full firmographics.
| # | Company | Location | Employees | Revenue |
|---|---|---|---|---|
| 1 | JD.com | Beijing | 517,124 | $155.2B |
| 2 | Salesforce Inc | San Francisco | 83,334 | $41.5B |
| 3 | Didi Chuxing Technology Co | — | 19,328 | $27B |
| 4 | Adobe Inc | San Jose | 31,360 | $23.8B |
| 5 | Websim | — | 126,339 | $23.2B |
| 6 | Adobe | San Jose | 29,945 | $20.9B |
| 7 | Intuit Inc | Mountain View | 18,200 | $20.1B |
| 8 | Futu Holdings Ltd | Palo Alto | 3,343 | $17.9B |
| 9 | VMware Inc | Palo Alto | 38,300 | $13.6B |
| 10 | ServiceNow Inc | Santa Clara | 29,187 | $13.3B |
IT in California companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 34,316 | 88.8% |
| 51-200 | 3,130 | 8.1% |
| 201-1000 | 961 | 2.5% |
| 1001-5000 | 190 | 0.5% |
| 5001+ | 60 | 0.2% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 34,674 | 89.9% |
| $10M-$50M | 3,009 | 7.8% |
| $50M-$250M | 618 | 1.6% |
| $250M-$1B | 172 | 0.4% |
| $1B+ | 106 | 0.3% |
Share is of companies with a known value — 38,657 with headcount and 38,579 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many IT in California are there?
There are 38,661 IT in California in the directory. Use the filters to narrow by employee count, revenue, or NAICS/SIC code.
How many large companies are in IT in California?
505 of the 38,661 companies in IT in California employ more than 500 people, and 106 report over $1 billion in annual revenue. See the size and revenue breakdown above for the full distribution.
What size are most IT in California companies?
Most are small and mid-sized businesses: the size and revenue tables above show the full spread, from under $10M up to $1B+, across the 38,579 companies with revenue on file.
What information is included for each company?
Every listing includes the company name, location, website, employee size, revenue range where available, and NAICS/SIC classification, with a link to the full profile.
Where does this directory come from?
Listings are compiled and maintained by Factur, a sales and marketing firm for B2B manufacturers. Any company can request an update or removal from its profile page.