Lewisboro is located in Westchester county New york with a geographic area of square miles. The total population in Lewisboro is 12,552 with 48.3% male and 51.7% female. Children under age 5 represent 5.2% of the population, under age 18 equal 21.9% of the population and over age 65 is 17.4% of the population. The median household income is $163,400, per capita income is $83,921. There are a total of 4,598 housing units with 90.9% owner occupied. Education includes 9.1% of residents that are high school graduates and 70.4% with a bachelor's degree or higher. The average temperature in Lewisboro in the summer is 70 degrees, and in the winter 27 degrees.