Rockmart, GA has a population of 4,222 and is the 7,193rd largest city in the United States. The population density is 748 per sq mi which is 300% higher than the Georgia average and 726% higher than the national average. The median age in Rockmart is 36 which is approximately equal to the Georgia average of 36. In Rockmart, 46% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 87% of Rockmart residents were born in Georgia, 11% were born out of state, 1% were born outside of the United States and 1% were foreign born.