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Companies in Connecticut

1,000 companies in Connecticut.

Discover 1,000 companies headquartered in Connecticut, spanning manufacturing, construction, and industrial sectors. Browse by city — including Stamford, Hartford, New Haven or by industry, and open any profile for its location, website, size, and NAICS/SIC classification.

Alliance Energy SolutionsOxford, Connecticut, United States Alliance For Community EmpowermentBridgeport, Connecticut, United States Alliance All Trades, Inc.Thomaston, Connecticut, United States Alliance For LivingNew London, Connecticut, United States Alliance Global Networks LLCWestport, Connecticut, United States · Consumer Alliance Intermediaries, LlcSimsbury, Connecticut, United States Alliance Medical GroupMiddlebury, Connecticut, United States Alliance Technology Partners LlcWilton, Connecticut, United States Media Relations Alliances By AlisaSimsbury, Connecticut, United States Alliance TechnologiesFairfield, Connecticut, United States Alliance Locksmiths IncNorth Haven, Connecticut, United States Alliance TutoringGreenwich, Connecticut, United States Allied Barton SecurtiyStamford, Connecticut, United States Allied CommunicationsWest Haven, Connecticut, United States Allied Community Resources IncEast Windsor, Connecticut, United States Alliant Food Safety Labs, LlcFarmington, Connecticut, United States Allied Printing Services Inc.Manchester, Connecticut, United States Allied Precision ComponentsWallingford, Connecticut, United States · Industrial & mechanical Allied Restoration and Construction LLCStamford, Connecticut, United States · Construction Allied Auto Parts CoWaterbury, Connecticut, United States AllisonbridgeRedding, Connecticut, United States Allkane InsuranceStamford, Connecticut, United States Alloy Specialties IncManchester, Connecticut, United States Allstar TherapyAvon, Connecticut, United States

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Frequently asked questions

How many companies are based in Connecticut?

1,000 companies in the directory are headquartered in Connecticut, browsable by city or by industry.

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.