Hillburn is located in Rockland county New york with a geographic area of 2.2 square miles. The total population in Hillburn is 1,031 with 45.1% male and 54.9% female. Children under age 5 represent 9.0% of the population, under age 18 equal 30.6% of the population and over age 65 is 13.6% of the population. The median household income is $72,574, per capita income is $27,374. There are a total of 297 housing units with 57.6% owner occupied. Education includes 33.0% of residents that are high school graduates and 20.2% with a bachelor's degree or higher. The average temperature in Hillburn in the summer is 70 degrees, and in the winter 27 degrees.