Martindale is located in Caldwell county Texas with a geographic area of 2.1 square miles. The total population in Martindale is 1,059 with 51.3% male and 48.7% female. Children under age 5 represent 14.4% of the population, under age 18 equal 25.7% of the population and over age 65 is 24.2% of the population. The median household income is $65,469, per capita income is $30,597. There are a total of 431 housing units with 69.6% owner occupied. Education includes 34.8% of residents that are high school graduates and 32.5% with a bachelor's degree or higher. The average temperature in Martindale in the summer is 83 degrees, and in the winter 49 degrees.