Morrow is a city in Clayton County, Georgia, United States. The population was 6,445 at the 2010 census, up from 4,882 at the 2000 census. It is the home of Clayton State University.Morrow was founded in 1846 with the advent of the railroad into the area. It was incorporated as a city in 1943.It is bordered to the north by Lake City and to the northwest by Forest Park. Downtown Atlanta is 13 miles (21 km) to the north. Interstate 75 passes through the southern part of the city, with access from Exit 233. TheSouthlake Mall is in the southwest part of the city near I-75.According to the United States Census Bureau, Morrow has a total area of 3.4 square miles (8.8 km2), of which 0.012 square miles (0.03 km2), or 0.31%, is water.