| Business | Phone |
| Corridor Business Incubator 215 W San Antonio St 2010, San Marcos 78666 | (512) 392-4588 |
| International Business Svc 402 S C M Allen Pkwy, San Marcos 78666 | (512) 754-6801 |
| Small Business Development Center 1205 N State Highway 123, San Marcos 78666 | (512) 558-7050 |