Monte alto is located in Hidalgo county Texas with a geographic area of 2.2 square miles. The total population in Monte alto is 1,667 with 45.5% male and 54.5% female. Children under age 5 represent 8.5% of the population, under age 18 equal 35.3% of the population and over age 65 is 9.8% of the population. The median household income is $32,679, per capita income is $12,040. There are a total of 453 housing units with 89.4% owner occupied. Education includes 25.4% of residents that are high school graduates and 9.1% with a bachelor's degree or higher. The average temperature in Monte alto in the summer is 83 degrees, and in the winter 49 degrees.