| Business | Phone |
| Banco Popular 732 Center Dr, San Marcos 92069 | (760) 233-5647 |
| Bank Of America 601 S Rancho Santa Fe Rd, San Marcos 92078 | (760) 630-3220 |
| California Bank & Trust 1132 San Marino Dr, San Marcos 92078 | (760) 752-9732 |
| California Bank & Trust 978 W San Marcos Blvd, San Marcos 92078 | (760) 471-3000 |
| Chase Manhattan 1 Civic Center Dr, San Marcos 92069 | (760) 510-8385 |
| Discovery Valley Bank 338 Via Vera Cruz, San Marcos 92078 | (760) 736-8900 |
| Downey Savings & Loan Assn 306 S Twin Oaks Valley Rd, San Marcos 92078 | (760) 471-3322 |
| San Diego National Bank 1642 W San Marcos Blvd, San Marcos 92078 | (760) 744-2771 |
| Downey Savings & Loan Assn 675 S Rancho Santa Fe Rd, San Marcos 92078 | (760) 471-0350 |
| First National Bank-N County 1145 San Marino Dr, San Marcos 92078 | (760) 471-1051 |