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10,083 companies in Plainfield, Illinois.
Find 10,083 companies in Plainfield, Illinois. 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 Chicago, Naperville, Rockford.
Of the 10,009 with a known headcount, 98% employ 1-50 people and 6 employ more than 1,000. 99% of those reporting revenue are under $10M.
These pages show the first 120 of 10,083 companies. Narrow the list with the filters above or open one of the related lists below to see the rest.
Plainfield, Illinois companies by size and revenue
| Employees | Companies | Share |
|---|---|---|
| 1-50 | 9,857 | 98.5% |
| 51-200 | 127 | 1.3% |
| 201-1000 | 19 | 0.2% |
| 1001-5000 | 6 | 0.1% |
| 5001+ | 0 | 0.0% |
| Revenue | Companies | Share |
|---|---|---|
| Under $10M | 9,712 | 98.9% |
| $10M-$50M | 87 | 0.9% |
| $50M-$250M | 15 | 0.2% |
| $250M-$1B | 3 | 0.0% |
| $1B+ | 0 | 0.0% |
Share is of companies with a known value — 10,009 with headcount and 9,817 with revenue on file, as of Jul 17, 2026.
Frequently asked questions
How many companies are in Plainfield, Illinois?
10,083 companies in the directory are located in Plainfield, Illinois.
How many large companies are in Plainfield, Illinois?
10 of the 10,083 companies in Plainfield, Illinois employ more than 500 people. See the size and revenue breakdown above for the full distribution.
What size are most Plainfield, Illinois 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 9,817 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.