Jefferson is located in Jackson county Georgia with a geographic area of 22.5 square miles. The total population in Jefferson is 11,619 with 51.0% male and 49.0% female. Children under age 5 represent 6.0% of the population, under age 18 equal 29.2% of the population and over age 65 is 11.4% of the population. The median household income is $70,766, per capita income is $33,128. There are a total of 3,715 housing units with 74.4% owner occupied. Education includes 17.3% of residents that are high school graduates and 32.7% with a bachelor's degree or higher. The average temperature in Jefferson in the summer is 76 degrees, and in the winter 42 degrees.