Sylacauga is a city in Talladega County, Alabama, United States. At the 2020 census, the population was 12,578. Sylacauga is known for its fine white marble bedrock. This was discovered shortly after settlers moved into the area and has been quarried ever since. The marble industry was the first recorded industry in the Sylacauga area. Sylacauga is the site of the first documented case of an object from outer space hitting a person.