Thornwood is located in Westchester county New york with a geographic area of 1.1 square miles. The total population in Thornwood is 4,484 with 49.8% male and 50.2% female. Children under age 5 represent 5.6% of the population, under age 18 equal 23.9% of the population and over age 65 is 15.3% of the population. The median household income is $165,391, per capita income is $54,589. There are a total of 1,395 housing units with 81.2% owner occupied. Education includes 13.5% of residents that are high school graduates and 62.4% with a bachelor's degree or higher. The average temperature in Thornwood in the summer is 70 degrees, and in the winter 27 degrees.
