| Business | Phone |
| Arc 120 Mata Way, San Marcos 92069 | (760) 471-2200 |
| Compusa 2085 Montiel Rd, San Marcos 92069 | (760) 737-8700 |
| Computer Discounters 295 Distribution St, San Marcos 92078 | (760) 736-0188 |
| Computer Factory 847 W San Marcos Blvd, San Marcos 92078 | (760) 744-4315 |
| Comp1 1322 E Mission Rd, San Marcos 92069 | (760) 746-4004 |
| Datel Systems Inc 740 Nordahl Rd # 122, San Marcos 92069 | (760) 740-0344 |
| Millennium Computers 1565 Creek St # 103, San Marcos 92078 | (760) 744-8524 |
| J & B Computers 439 W San Marcos Blvd, San Marcos 92069 | (760) 744-8809 |