Jefferson is a city in Jackson County, Georgia, United States. The population was 9,432 at the 2010 census. The city is the county seat of Jackson County.HistoryJefferson was founded in 1800. That same year, the seat of Jackson County was transferred to Jefferson from Clarkesboro. Jefferson was incorporated as a town in 1806 and as a city in 1896. The city was named after Thomas Jefferson.GeographyJefferson is located at . According to the United States Census Bureau, the city has a total area of 19.0sqmi, all land.DemographicsThere were 1,415 households out of which 37.2% had children under the age of 18 living with them, 55.0% were married couples living together, 15.6% had a female householder with no husband present, and 26.0% were non-families. 23.3% of all households were made up of individuals and 9.2% had someone living alone who was 65 years of age or older. The average household size was 2.67 and the average family size was 3.15.As of the census of 2000, there were 3,825 people, 1,415 households, and 1,047 families residing in the city. The population density was 201.6 people per square mile (77.8/km²). There were 1,522 housing units at an average density of 80.2 per square mile (31.0/km²). The racial makeup of the city was 80.44% White, 16.05% African American, 1.20% Asian, 1.15% from other races, and 1.15% from two or more races. Hispanic or Latino of any race were 4.21% of the population.