Marble falls is located in Burnet county Texas with a geographic area of 14.5 square miles. The total population in Marble falls is 6,746 with 50.8% male and 49.2% female. Children under age 5 represent 3.6% of the population, under age 18 equal 22.6% of the population and over age 65 is 19.1% of the population. The median household income is $45,727, per capita income is $27,487. There are a total of 2,789 housing units with 47.9% owner occupied. Education includes 20.6% of residents that are high school graduates and 32.4% with a bachelor's degree or higher. The average temperature in Marble falls in the summer is 83 degrees, and in the winter 49 degrees.