Valhalla is located in Westchester county New york with a geographic area of 0.8 square miles. The total population in Valhalla is 3,511 with 51.9% male and 48.1% female. Children under age 5 represent 8.2% of the population, under age 18 equal 20.0% of the population and over age 65 is 18.1% of the population. The median household income is $104,792, per capita income is $45,241. There are a total of 1,131 housing units with 72.6% owner occupied. Education includes 33.7% of residents that are high school graduates and 43.3% with a bachelor's degree or higher. The average temperature in Valhalla in the summer is 70 degrees, and in the winter 27 degrees.