Sag harbor is located in Suffolk county New york with a geographic area of 1.8 square miles. The total population in Sag harbor is 1,959 with 50.2% male and 49.8% female. Children under age 5 represent 3.4% of the population, under age 18 equal 16.6% of the population and over age 65 is 34.1% of the population. The median household income is $106,176, per capita income is $71,738. There are a total of 926 housing units with 70.6% owner occupied. Education includes 25.8% of residents that are high school graduates and 63.5% with a bachelor's degree or higher. The average temperature in Sag harbor in the summer is 70 degrees, and in the winter 27 degrees.