Today San Marcos, TX, San Marcos TX is count around 185 homes for sale at current average listing price of $539,646. Nearby neighborhoods of San Marcos, TX are La Cima, Cottonwood Creek, Millbrook Park, Kissing Tree, La Cima: 70ft. lots, Kissing Tree 55+, Original Town Of San Marcos, Skyline, El Camino Real Ph 1 Sec 2, Oak Heights. Most of San Marcos, TX homes are 3 bedrooms with 2 bathrooms.