| Business | Phone |
| San Ysidro Postal Center 4492 Camino De La Plz, San Ysidro 92173 | (619) 690-4585 |
| Postal Annex+ 416 W San Ysidro Blvd # L, San Ysidro 92173 | (619) 428-5924 |
| Coral International 482 W San Ysidro Blvd # 2, San Ysidro 92173 | (619) 428-1614 |
| Mr Mail 511 E San Ysidro Blvd, San Ysidro 92173 | (619) 690-4410 |