Marco island is located in Collier county Florida with a geographic area of 12.2 square miles. The total population in Marco island is 17,963 with 48.8% male and 51.2% female. Children under age 5 represent 0.9% of the population, under age 18 equal 7.2% of the population and over age 65 is 56.9% of the population. The median household income is $84,288, per capita income is $72,785. There are a total of 9,056 housing units with 88.8% owner occupied. Education includes 18.1% of residents that are high school graduates and 50.8% with a bachelor's degree or higher. The average temperature in Marco island in the summer is 82 degrees, and in the winter 56 degrees.
