| Name | Address, Zip |
| Utility Workers Union Of America Afl-cio Local 380 | 76 Progress Drive, 06902-3600 |
| International Union United Auto Aerospace & Agricultural Workers | 888 Washington Blvd 6th Floor, 06901-2924 |
| National Alliance Of Postal And Federal Employees | 80 Lawn Ave Apt 11, 06902-3123 |
| Amalgamated Transit Union | 447 Glenbrook Rd, 06906-1820 |
| United Electrical Radio & Machine Workers Of America | Po Box 481, 06904-0481 |
| American Postal Workers Union | 2001 W Main St, 06902-4501 |
| American Federation Of State County & Municipal Employees | 888 Washington Blvd 10th Fl, 06901-2924 |
| American Federation Of State County & Municipal Employees | 43 Dora St Apt 2, 06902-9416 |
| United Food And Commerical Workers International Union | 393 Oaklawn Ave, 06905-3429 |
| Educational Assistants Of Stamford Association | 6 Bouton St E Apt 7, 06907-1649 |
| Civil Service Employees Association | 21 Cody Dr, 06905-3214 |
| National Association Of Government Employees | Po Box 2211, 06906-0211 |
| International Association Of Fire Fighters | 629 Main St, 06901-2010 |
| Stamford Board Of Education Employees Association-easa | Po Box 4660, 06907-0660 |
| National Association Of Letter Carriers | 22 Knapp St Ste 203, 06907-1741 |
| Connecticut Education Association | 1177 Summer St, 06905-5572 |
| International Brotherhood Of Electrical Workers | Po Box 2326, 06906-0326 |
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