Westport island is located in Lincoln county Maine with a geographic area of square miles. The total population in Westport island is 862 with 60.3% male and 39.7% female. Children under age 5 represent 1.0% of the population, under age 18 equal 10.1% of the population and over age 65 is 34.7% of the population. The median household income is $73,594, per capita income is $50,006. There are a total of 378 housing units with 87.0% owner occupied. Education includes 26.2% of residents that are high school graduates and 41.0% with a bachelor's degree or higher. The average temperature in Westport island in the summer is 68 degrees, and in the winter 25 degrees.