| Name | Address, Zip |
| Appalachia Intermediate Unit 08 Education Association | 1633 Solomon Run Rd, 15904-7219 |
| National Active And Retired Federal Employees Association | 309 Freeman Dr, 15904-3428 |
| Amalgamated Transit Union | 304 Waterfall Dr, 15906-3816 |
| Laborers International Union Of North America | 406 Main St Ste 303, 15901-1815 |
| American Federation Of Labor & Congress Of Industrial Orgs | 519 Somerset St, 15901-2640 |
| American Postal Workers Union | 235 Jari Drive, 15904-6940 |
| American Federation Of Teachers | 101 Community College Way, 15904-2948 |
| American Federation Of State County & Municipal Employees | Po Box 727, 15907-0727 |
| American Federation Of Musicians Of The Us & Canada | 1626 Luzerne Street Ext, 15905-2933 |
| Somerset Area Education Association | 113 Seneca St, 15904-2427 |
| Association Of Civilian Technicians Inc | Po Box 5413, 15904-5413 |
| National Association Of Letter Carriers | 533 Ferndale Ave, 15905-3943 |
| International Association Of Fire Fighters | Po Box 454, 15907-0454 |
| Non-tenured Teachers Of The Commonwealth Education Association | 727 Goucher St, 15905-3025 |
| Greater Johnstown Education Association | 1020 Hillside Trl, 15905-1233 |
| International Brotherhood Of Electrical Workers | 1125 Main Street, 15909-2016 |
| International Brotherhood Of Electrical Workers | 1125 Main Street, 15909-2016 |
| International Brotherhood Of Electrical Workers | 408 Broad St, 15906-2717 |
| Greater Johnstown Education Support Professional | 81 Mack Ave, 15906-1036 |
| United Steelworkers | 422 Main Street, 15901-1824 |
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