Lake City is a city in Clayton County, Georgia, United States. The population was 2,612 at the 2010 census.
The Georgia General Assembly incorporated Lake City in 1951. The community was named for a lake which once was located at the town site, but since has been filled in.
Lake City is located in northern Clayton County at 33°36′29″N 84°20′26″W (33.608109, -84.340481). It is bordered to the south by Morrow and to the west and north by Forest Park. Fort Gillem is directly to the north, within the Forest Park city limits. Downtown Atlanta is 11 miles (18 km) to the north.
According to the United States Census Bureau, Lake City has a total area of 1.9 square miles (4.8 km2), all land.
As of the census of 2000, there were 2,886 people, 950 households, and 690 families residing in the city. The population density was 1,594.5 people per square mile (615.6/km2). There were 1,022 housing units at an average density of 564.6 per square mile (218.0/km2). The racial makeup of the city was 51.91% White, 32.22% African American, 0.94% Native American, 9.67% Asian, 0.14% Pacific Islander, 3.19% from other races, and 1.94% from two or more races.