Bainbridge is a city in Decatur County, Georgia, United States. The population was 11,722 at the 2000 census. The city is the county seat of Decatur County. As of the census of 2000, there were 11,722 people, 4,444 households, and 3,013 families residing in the city. The population density was 255.6/km˛ (661.8/mi˛, Georgia average is 141.4/mi˛, U.S. average is 79.6/mi˛). There were 5,051 housing units at an average density of 110.1/km˛ (285.2/mi˛). The racial makeup of the city was 47.48% White (Georgia 65.1%, U.S. 75.1%), 50.34% African American (Georgia 28.7%, U.S. 12.3%), 0.12% Native American (Georgia 0.3%, U.S. 0.9%), 0.64% Asian (Georgia 2.1%, U.S. 3.6%), 0.02% Pacific Islander (Georgia 0.1%, U.S. 0.1%), 0.78% from other races (Georgia 2.4%, U.S. 5.5%), and 0.61% from two or more races (Georgia 1.4%, U.S. 2.4%). 2.00% of the population were Hispanic or Latino of any race (Georgia 5.3%, U.S. 12.5%).

There were 4,444 households out of which 33.7% had children under the age of 18 living with them, 39.7% were married couples living together, 24.2% had a female householder with no husband present, and 32.2% were non-families. 28.5% of all households were made up of individuals and 12.9% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 3.09.