Associated Students Inc 333 S Twin Oaks Valley Rd San Marcos, CA 92096 Phone : (760) 750-4990 Childrens Nook 1323 Shadow Hills Ct San Marcos, CA 92096 Phone : (760) 480-8664 California State University 333 S Twin Oaks Valley Rd San Marcos, CA 92096 Phone : (760) 750-4000 Aztec Shops Csu 333 S Twin Oaks.valley Rd San Marcos, CA 92096 Phone : () - American Language Culture Institute 333 S Twin Oaks Valley Rd San Marcos, CA 92096 Phone : (760) 750-3200 California State University San Marcos 333 S Twin Oaks Valley Rd San Marcos, CA 92096 Phone : (760) 750-4848