317-622-8970Search all companies →Companies in Los Altos, California
15,222 companies in Los Altos, California.
Find 15,222 companies in Los Altos, California. From manufacturers to industrial suppliers, each listing carries the firm's address, website, size, and NAICS/SIC codes. You can also browse nearby cities such as Los Angeles, San Francisco, San Diego.
Of the 15,140 with a known headcount, 98% employ 1-50 people and 3 employ more than 1,000. 98% of those reporting revenue are under $10M, while 2 report more than $1B.
These pages show the first 120 of 15,222 companies. Narrow the list with the filters above or open one of the related lists below to see the rest.
Los Altos, California companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 14,800 | 97.8% |
| 51-200 | 256 | 1.7% |
| 201-1000 | 81 | 0.5% |
| 1001-5000 | 3 | 0.0% |
| 5001+ | 0 | 0.0% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 14,569 | 98.1% |
| $10M-$50M | 237 | 1.6% |
| $50M-$250M | 35 | 0.2% |
| $250M-$1B | 6 | 0.0% |
| $1B+ | 2 | 0.0% |
Share is of companies with a known value — 15,140 with headcount and 14,849 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many companies are in Los Altos, California?
15,222 companies in the directory are located in Los Altos, California.
How many large companies are in Los Altos, California?
28 of the 15,222 companies in Los Altos, California employ more than 500 people, and 2 report over $1 billion in annual revenue. See the size and revenue breakdown above for the full distribution.
What size are most Los Altos, 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 14,849 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.