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10,260 companies in Glendora, California.
Find 10,260 companies in Glendora, 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 10,215 with a known headcount, 99% employ 1-50 people and 3 employ more than 1,000. 99% of those reporting revenue are under $10M.
These pages show the first 120 of 10,260 companies. Narrow the list with the filters above or open one of the related lists below to see the rest.
Glendora, California companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 10,106 | 98.9% |
| 51-200 | 90 | 0.9% |
| 201-1000 | 16 | 0.2% |
| 1001-5000 | 2 | 0.0% |
| 5001+ | 1 | 0.0% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 9,963 | 98.9% |
| $10M-$50M | 101 | 1.0% |
| $50M-$250M | 10 | 0.1% |
| $250M-$1B | 1 | 0.0% |
| $1B+ | 0 | 0.0% |
Share is of companies with a known value — 10,215 with headcount and 10,075 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many companies are in Glendora, California?
10,260 companies in the directory are located in Glendora, California.
How many large companies are in Glendora, California?
6 of the 10,260 companies in Glendora, California employ more than 500 people. See the size and revenue breakdown above for the full distribution.
What size are most Glendora, 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 10,075 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.