| Name | Address, Zip |
| City Of Groton Local 1964 I A F F | 140 Broad St, 06340-3659 |
| American Federation Of Government Employees Local 2105 | Po Box 5235, 06349-5235 |
| Patrolmans Benevolent Association Groton Post 3 | 68 Groton Long Point Rd, 06340-4806 |
| International Union United Auto Aerospace & Agricultural Workers | Po Box 7275, 06340-7275 |
| International Association Of Machinists & Aerospace Workers | 18 Pleasant St, 06340-3908 |
| National Air Traffic Controllers Association | 157 Tower Ave, 06340-5327 |
| Laborers International Union Of North Amercia | 268 Thomas Rd, 06340-5324 |
| United Electrical Radio And Machine Workers Of America | 295 Meridian St, 06340-4012 |
| United Electrical Radio & Machine Workers Of America | 68 Groton Long Point Rd, 06340-4806 |
| United Brotherhood Of Carpenters & Joiners Of America | 171 Thames St, 06340-3630 |
| American Federation Of State County & Municipal Employees | 170 Gary Ct, 06340 |
| American Federation Of State County & Municipal Employees | 3 Atlantic Ave, 06340-8802 |
| American Federation Of State County & Municiple Employees | 295 Meridian St, 06340-4012 |
| American Federation Of State County & Municipal Employees | 51 Bayview Ave, 06340-5842 |
| American Federation Of State County & Municipal Employees | 68 Groton Long Point Rd, 06340-4806 |
| American Federation Of Labor & Congress Of Industrial Orgs | 114 Poquonnock Rd, 06340-4408 |
| Office And Professional Employees International Union | 171 Thames St, 06340-3630 |
| National Association Of Government Employees | Po Box 5396, 06349-5396 |
| International Association Of Fire Fighters | Po Box 5003, 06349 |
| Association Of Civilian Technicians Inc | 139 Tower Ave, 06340-5327 |
| International Brotherhood Of Boiler Makers Iron Ship Builders Blacksmi | 33 Sacred Heart Dr, 06340-4431 |
| International Brotherhood Of Electrical Workers | 18 Pleasant St, 06340-3908 |
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