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Companies in Greenwich, Connecticut

28,188 companies in Greenwich, Connecticut.

Find 28,188 companies in Greenwich, Connecticut. 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 Stamford, Hartford, New Haven.

Of the 28,028 with a known headcount, 98% employ 1-50 people and 20 employ more than 1,000. 98% of those reporting revenue are under $10M, while 11 report more than $1B.

28,188Companies
43500+ employees
11$1B+ revenue
Jul 17, 2026Last updated
New England Center for Natural MedicineGreenwich, Connecticut, United States · Healthcare & Life ScienceAqr Mrp Offshore Fund LPGreenwich, Connecticut, United States · FinancialLittle Thai KitchenGreenwich, Connecticut, United StatesOffices Of Michael ShermanGreenwich, Connecticut, United States · Industrial & mechanicalPiping Rock Builders IncGreenwich, Connecticut, United StatesPentad Investment Partners LLCGreenwich, Connecticut, United States · FinancialGHS Innovation LabGreenwich, Connecticut, United StatesMongoose Capital LLCGreenwich, Connecticut, United States · FinancialSisyphus Holdings LLCGreenwich, Connecticut, United States · FinancialKava Associates LLCGreenwich, Connecticut, United States · Industrial & mechanicalMerkury CorpGreenwich, Connecticut, United States · Industrial & mechanicalLevon Enterprises LLCGreenwich, Connecticut, United States · Industrial & mechanicalaspFAIRFIELD - WESTCHESTER CONCERTS IncGreenwich, Connecticut, United StatesLyons and Associates LLCGreenwich, Connecticut, United States · Industrial & mechanicalBelle Haven Wire Project Ii LLCGreenwich, Connecticut, United StatesHeating Oil ExchangeGreenwich, Connecticut, United StatesBb Mira LLCGreenwich, Connecticut, United States · Industrial & mechanicalSanzar CorpGreenwich, Connecticut, United States · Industrial & mechanicalDennis Hillman Golf LLCGreenwich, Connecticut, United States125 MasonGreenwich, Connecticut, United StatesDavid SingerGreenwich, Connecticut, United Stateschieftans IncGreenwich, Connecticut, United States · Industrial & mechanicalMultimind Investments LLCGreenwich, Connecticut, United States · FinancialCawsco IncGreenwich, Connecticut, United States · Industrial & mechanical

These pages show the first 120 of 28,188 companies. Narrow the list with the filters above or open one of the related lists below to see the rest.

Greenwich, Connecticut companies by size and revenue

By number of employees
EmployeesCompaniesShare
1-5027,56698.4%
51-2003491.2%
201-1000930.3%
1001-5000120.0%
5001+80.0%
By annual revenue
RevenueCompaniesShare
Under $10M27,02398.4%
$10M-$50M3581.3%
$50M-$250M670.2%
$250M-$1B120.0%
$1B+110.0%

Share is of companies with a known value — 28,028 with headcount and 27,471 with revenue on file, as of Jul 17, 2026.

Frequently asked questions

How many companies are in Greenwich, Connecticut?

28,188 companies in the directory are located in Greenwich, Connecticut.

How many large companies are in Greenwich, Connecticut?

43 of the 28,188 companies in Greenwich, Connecticut 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 Greenwich, Connecticut 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 27,471 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.