Ludlow is located in Hampden county Massachusetts with a geographic area of square miles. The total population in Ludlow is 21,223 with 50.9% male and 49.1% female. Children under age 5 represent 3.9% of the population, under age 18 equal 16.0% of the population and over age 65 is 20.4% of the population. The median household income is $73,516, per capita income is $35,528. There are a total of 8,310 housing units with 75.2% owner occupied. Education includes 33.0% of residents that are high school graduates and 24.4% with a bachelor's degree or higher. The average temperature in Ludlow in the summer is 70 degrees, and in the winter 30 degrees.