317-622-8970Search all companies →Companies in Walnut Creek, California
30,939 companies in Walnut Creek, California.
Find 30,939 companies in Walnut Creek, 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 30,771 with a known headcount, 98% employ 1-50 people and 27 employ more than 1,000. 98% of those reporting revenue are under $10M, while 11 report more than $1B.
These pages show the first 120 of 30,939 companies. Narrow the list with the filters above or open one of the related lists below to see the rest.
Walnut Creek, California companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 30,178 | 98.1% |
| 51-200 | 452 | 1.5% |
| 201-1000 | 114 | 0.4% |
| 1001-5000 | 18 | 0.1% |
| 5001+ | 9 | 0.0% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 29,614 | 98.1% |
| $10M-$50M | 435 | 1.4% |
| $50M-$250M | 95 | 0.3% |
| $250M-$1B | 18 | 0.1% |
| $1B+ | 11 | 0.0% |
Share is of companies with a known value — 30,771 with headcount and 30,173 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many companies are in Walnut Creek, California?
30,939 companies in the directory are located in Walnut Creek, California.
How many large companies are in Walnut Creek, California?
50 of the 30,939 companies in Walnut Creek, California employ more than 500 people, and 11 report over $1 billion in annual revenue. See the size and revenue breakdown above for the full distribution.
What size are most Walnut Creek, 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 30,173 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.