Mount vernon is located in Westchester county New york with a geographic area of 4.4 square miles. The total population in Mount vernon is 67,623 with 43.8% male and 56.2% female. Children under age 5 represent 5.7% of the population, under age 18 equal 19.3% of the population and over age 65 is 17.9% of the population. The median household income is $59,291, per capita income is $34,604. There are a total of 27,180 housing units with 38.1% owner occupied. Education includes 24.6% of residents that are high school graduates and 32.6% with a bachelor's degree or higher. The average temperature in Mount vernon in the summer is 72 degrees, and in the winter 27 degrees.