Sanibel is located in Lee county Florida with a geographic area of 16.2 square miles. The total population in Sanibel is 7,378 with 45.2% male and 54.8% female. Children under age 5 represent 0.9% of the population, under age 18 equal 6.4% of the population and over age 65 is 56.7% of the population. The median household income is $92,875, per capita income is $90,146. There are a total of 3,919 housing units with 85.7% owner occupied. Education includes 21.2% of residents that are high school graduates and 59.5% with a bachelor's degree or higher. The average temperature in Sanibel in the summer is 83 degrees, and in the winter 56 degrees.
