Marble Falls, TX is located off Highway 281 North near Highway 71 near the Colorado River in Burnet County. Marble Falls is in the 78654 zip code near Horseshoe Bay. Marble Falls, Texas real estate and homes for sale. Find information on the local Marble Falls community and the real estate services available to sellers, first time home buyers, move up buyers, empty nesters, and investors. Search homes for sale in Marble Falls, TX, view single family homes, condos, garden homes, and new construction for sale in Marble Falls, TX. For more info about any of these Marble Falls real estate listings, click the "Request More Information" button located on the detail page of each property.