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Companies headquartered in Connecticut

61 public companies are headquartered in Connecticut, including 16 in the S&P 500 or Nasdaq-100. The biggest concentrations are in Stamford, Greenwich and Norwalk.

61 companies · 20 cities · 16 ★ index members

Stamford 14

Greenwich 8

Norwalk 8

New Haven 6

Shelton 6

Danbury 3

Bloomfield 2

Hartford 2

Elsewhere in Connecticut 12

Other states: California Texas New York Massachusetts Florida Pennsylvania Illinois Virginia New Jersey Ohio Colorado Georgia North Carolina Maryland Arizona Washington Tennessee Minnesota Michigan Wisconsin Indiana Utah Missouri Nevada Delaware Oklahoma Louisiana Kentucky Arkansas Nebraska South Carolina Alabama Oregon Iowa Kansas Washington, D.C. Idaho New Hampshire Rhode Island Montana North Dakota West Virginia Hawaii Maine South Dakota Mississippi

Headquarters are each company's principal executive office as filed with the SEC (EDGAR business address), as of October 3, 2026. ★ marks S&P 500 and Nasdaq-100 members. All locations.