Rockmart is a town in Polk County, Georgia, United States. Its population was 4,732 at the 2020 census. It developed as a railroad depot town when the Southern Railway built a station in the area. The community was incorporated in 1872, and was named from abundant deposits of slate in the area. The Rockmart Downtown Historic District is listed on the National Register of Historic Places.

Polk County is a county located in the northwestern part of the U.S. state of Georgia. As of the 2020 census, the population was 42,853. The county seat is Cedartown. The county was created on December 20, 1851, by an act of the Georgia General Assembly and named after James K. Polk, the eleventh President of the United States.