Big pine key is located in Monroe county Florida with a geographic area of 10.2 square miles. The total population in Big pine key is 4,853 with 51.2% male and 48.8% female. Children under age 5 represent 5.6% of the population, under age 18 equal 15.6% of the population and over age 65 is 23.8% of the population. The median household income is $75,996, per capita income is $38,539. There are a total of 2,035 housing units with 76.6% owner occupied. Education includes 28.5% of residents that are high school graduates and 30.8% with a bachelor's degree or higher. The average temperature in Big pine key in the summer is 80 degrees, and in the winter 56 degrees.