| Business | Phone |
| Agricultural System Tech 8710 Avenida De La Fuente # 1, San Diego 92154 | (619) 661-8282 |
| Business Communication Center 420 K St, San Diego 92101 | (619) 232-2233 |
| Correo South Pacific 4630 Border Village Rd, San Diego 92173 | (619) 428-1156 |
| Scripps Copy & Mailstop 9842 Hibert St, San Diego 92131 | (858) 695-1027 |
| Postal Annex+ 13223 Black Mountain Rd # 1, San Diego 92129 | (858) 484-8200 |
| Postal Annex+ 14391 Penasquitos Dr # C, San Diego 92129 | (858) 672-7895 |
| Postal Annex+ 2498 Roll Dr # A, San Diego 92154 | (619) 661-1671 |
| Postal Annex+ 555 Saturn Blvd # B, San Diego 92154 | (619) 424-9800 |
| Postal Convenience Center 2260 El Cajon Blvd, San Diego 92104 | (619) 295-3760 |
| North Park Postal 2 3066 El Cajon Blvd, San Diego 92104 | (619) 858-0312 |
| Mail Call 2726 Shelter Island Dr, San Diego 92106 | (619) 222-1186 |
| Mail Call Plus 4019 Goldfinch St, San Diego 92103 | (619) 296-9111 |
| Mail Dispatch 9040 Activity Rd, San Diego 92126 | (858) 444-2350 |