Union City is a city in Fulton County, Georgia, United States. The population was 19,456 at the 2010 census.
The Georgia General Assembly incorporated Union City in 1908. One source claims that the town was named for the union of rails at a railroad junction, while another version states the name commemorates a "Farmer's Union" which once was headquartered here.
Union City is located at 33°34′42″N 84°32′36″W (33.578470, -84.543354).
According to the United States Census Bureau, the city has a total area of 19.3 square miles (50.0 km2), of which 19.1 square miles (49.5 km2) is land and 0.2 square miles (0.5 km2), or 0.83%, is water.
At the 2010 census, there were 19,456 people living in the city. The racial makeup of the city was 81.5% Black, 8.6% White, 0.2% Native American, 0.8% Asian, 0.0% Pacific Islander, 0.3% from some other race and 1.6% from two or more races. 7.0% were Hispanic or Latino of any race.
At the 2000 census there were 11,622 people, 4,974 households, and 2,750 families living in the city. The population density was 1,353.2 people per square mile (522.3/km2). There were 5,332 housing units at an average density of 620.9 per square mile (239.7/km2). The racial makeup of the city was 69.33% African American, 25.36% White, 0.26% Native American, 1.26% Asian, 0.03% Pacific Islander, 2.04% from other races, and 1.72% from two or more races.