Powder Springs is a city in Cobb County, Georgia, United States. The population was 13,940 at the 2010 census, with an estimated population for 2015 of 14,826.In 2015 the city elected its first black mayor, Al Thurman. He was the first African American to be elected as mayor in Cobb County, but was one of several elected in small towns in Georgia in 2015.