Marshallville, GA has a population of 1,493 and is the 12,712th largest city in the United States. The population density is 478 per sq mi which is 186% higher than the Georgia average and 427% higher than the national average. The median age in Marshallville is 38 which is approximately 6% higher than the Georgia average of 36. In Marshallville, 51% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 83% of Marshallville residents were born in Georgia, 16% were born out of state, 0% were born outside of the United States and 0% were foreign born.