Belen is located in Valencia county New mexico with a geographic area of 19.0 square miles. The total population in Belen is 7,476 with 50.3% male and 49.7% female. Children under age 5 represent 4.4% of the population, under age 18 equal 19.1% of the population and over age 65 is 18.1% of the population. The median household income is $35,448, per capita income is $19,237. There are a total of 2,679 housing units with 67.7% owner occupied. Education includes 26.5% of residents that are high school graduates and 21.6% with a bachelor's degree or higher. The average temperature in Belen in the summer is 74 degrees, and in the winter 32 degrees.