Tybee island is located in Chatham county Georgia with a geographic area of 2.9 square miles. The total population in Tybee island is 3,094 with 50.0% male and 50.0% female. Children under age 5 represent 4.4% of the population, under age 18 equal 10.0% of the population and over age 65 is 36.2% of the population. The median household income is $94,722, per capita income is $46,270. There are a total of 1,366 housing units with 78.6% owner occupied. Education includes 22.0% of residents that are high school graduates and 59.0% with a bachelor's degree or higher. The average temperature in Tybee island in the summer is 81 degrees, and in the winter 42 degrees.