Today san marcos unified, San Marcos CA is count around 123 homes for sale at current average listing price of $1,246,613. Nearby neighborhoods of san marcos unified are 92078 - San Marcos, 92069 - San Marcos, La Costa, 92009 - Carlsbad, Lake San Marcos, San Elijo Hills, Santa Fe Hills, Old Creek Ranch, Rancho Santalina, 92081 - Vista. Most of san marcos unified homes are 3 bedrooms with 3 bathrooms.