Jupiter island is located in Martin county Florida with a geographic area of 2.7 square miles. The total population in Jupiter island is 862 with 51.7% male and 48.3% female. Children under age 5 represent 0.5% of the population, under age 18 equal 5.2% of the population and over age 65 is 47.1% of the population. The median household income is $151,667, per capita income is $193,546. There are a total of 332 housing units with 91.9% owner occupied. Education includes 8.1% of residents that are high school graduates and 76.2% with a bachelor's degree or higher. The average temperature in Jupiter island in the summer is 80 degrees, and in the winter 56 degrees.