These Are The 100 Largest Companies In Connecticut

Chris Kolmar
by Chris Kolmar
Biggest Companies, Rankings - 10 months ago
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If you live in Connecticut and you’re looking for a job, you have come to the right place.

Because, sure, you can google things like ‘biggest companies in Connecticut’ and get a fairly long list of companies with a lot of employees, or perhaps that have the biggest names — but here, we bring you the companies with the most current employees that are actually headquartered in Connecticut.

Below, we’ll give you a complete list of Connecticut’s 100 largest companies, but first, here’s a look at the top 10:

  1. United Technologies
  2. Starwood Hotels & Resorts Worldwide
  3. Spectrum
  4. XPO Logistics
  5. Otis Elevator
  6. Amphenol
  7. Stanley Black & Decker
  8. Subway
  9. Aetna
  10. Carrier

United Technologies comes in at the top, with more current employees than any other company in the . We’ll get to specifics in a moment; first, here’s a look at our methodology.

How we identified the biggest companies in Connecticut

Here at Zippia we have developed a database of over 250,000 companies that spans the entire country.

For this report, we looked at the companies headquartered in Connecticut with at least 100 employees. That left us with 642 companies.

We then ranked each company from most to least current employees to determine the biggest companies in Connecticut.

As it turns out, United Technologies looks to the be the biggest company in Connecticut clocking in with 201,600 employees.

Now, check out how the 100 biggest companies in Connecticut ranked.

If you’re interested, you can read more about the Connecticut job scene here:

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Detailed List Of The 100 Biggest Companies In Connecticut

Rank Company City Employees
1 United Technologies Farmington 201,600
2 Starwood Hotels & Resorts Worldwide Stamford 188,000
3 Spectrum Stamford 91,500
4 XPO Logistics Greenwich 90,000
5 Otis Elevator Farmington 63,000
6 Amphenol Wallingford 62,000
7 Stanley Black & Decker New Britain 54,023
8 Subway Milford 51,440
9 Aetna Hartford 49,500
10 Carrier Farmington 44,545
11 Cigna Bloomfield 41,000
12 Xerox Norwalk 36,900
13 Baker Hughes, a GE Fairfield 34,000
14 Nestle Waters North America Stamford 31,740
15 EMCOR Group Norwalk 31,000
16 Praxair Danbury 26,487
17 Harman International Industries Stamford 26,000
18 Frontier Communications Stamford 23,924
19 Booking Holdings Norwalk 22,500
20 Fox Den Old Greenwich 21,995
21 Hubbell Incorporated Shelton 18,000
22 Hamilton Sundstrand Windsor Locks 17,158
23 Yale New Haven Hospital New Haven 17,000
24 The Hartford Hartford 16,900
25 Daymon Stamford 16,000
26 Synchrony Financial Stamford 15,000
27 Coventry Health Care Hartford 14,400
28 Pitney Bowes Stamford 14,200
29 Gartner Stamford 13,000
30 TUV Rheinland-North America Newtown 13,000
31 United Rentals Stamford 12,500
32 Yale New Haven Health New Haven 12,178
33 Terex Westport 11,300
34 Crane Co. Stamford 11,000
35 Bristol Inc Watertown 10,001
36 Pratt & Whitney East Hartford 10,001
37 Clayton Homes Shelton 10,000
38 Silgan Holdings Stamford 9,215
39 FactSet Norwalk 8,885
40 Sikorsky Aircraft Corporation Stratford 8,735
41 University of Connecticut Mansfield 8,420
42 SS&C Technologies Manchester 8,001
43 Genesee & Wyoming Darien 8,000
44 W. R. Berkley Greenwich 7,683
45 Providence Service Stamford 7,620
46 Woods Electrical Co Inc Farmington 7,500
47 Hartford Hospital Hartford 7,500
48 Cenveo Stamford 7,300
49 LAZ Parking Hartford 7,000
50 AVANGRID New Haven 6,800
51 Hexcel Stamford 6,155
52 NovitexEnterprise Stamford 6,082
53 Kaman Bloomfield 5,265
54 Ethan Allen Danbury 5,200
55 Olympus Partners Stamford 5,153
56 Hartford HealthCare Hartford 5,100
57 Barnes Group Bristol 5,036
58 Foxwoods Resort Casino Ledyard 5,000
59 People’s United Bank Bridgeport 4,961
60 TRC Companies Windsor 4,800
61 CarringtonRES Greenwich 4,600
62 Yale University New Haven 4,330
63 Timex Group Middlebury 4,318
64 Tronox Stamford 4,300
65 Global Imaging Systems Norwalk 4,230
66 New Castle Shelton 4,200
67 Wilton Surgery Center Wilton 3,963
68 Doncasters Farmington 3,950
69 Webloyalty Stamford 3,900
70 Legrand West Hartford 3,838
71 MRRC Hold Co Greenwich 3,800
72 Saint Francis Hospital & Medical Center Hartford 3,740
73 National Home Health Care Corp Cromwell 3,680
74 Connecticut Children’s Medical Center Hartford 3,597
75 Acuren Danbury 3,500
76 The Lane Construction Cheshire 3,500
77 RBC Bearings Oxford 3,401
78 Unimin New Canaan 3,400
79 Affinion Group Stamford 3,370
80 Webster Bank Waterbury 3,349
81 HEI Hotels & Resorts Norwalk 3,250
82 Bob’s Discount Furniture Manchester 3,225
83 William Raveis Real Estate Shelton 3,200
84 Cartus Danbury 3,200
85 Western Connecticut Health Network Danbury 3,176
86 LJ/HAH Holdings Corporation Greenwich 3,168
87 Bridgeport Hospital Bridgeport 3,152
88 Alexion Pharmaceuticals New Haven 3,121
89 Middlesex Hospital Middletown 3,100
90 Rockwood Service Corporation Greenwich 3,009
91 Ge Supply México, S. de R.L. Shelton 3,000
92 Prudential Retirement Hartford 3,000
93 CONNECTICUT VALLEY HOSPITAL Middletown 3,000
94 Save the Children US Fairfield 3,000
95 United Technologies/Carrier Farmington 3,000
96 Danbury Hospital Danbury 3,000
97 Crown Risdon USA Inc Watertown 3,000
98 Institute Of Living-Treatment Hartford 3,000
99 Hexcel Reinforcements Corp Stamford 3,000
100 Hartford Public Schools Hartford 3,000

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