Rockingham, GA has a population of 334 and is the 21,874th largest city in the United States. The population density is 285 per sq mi which is 71% higher than the Georgia average and 215% higher than the national average. The median age in Rockingham is 13 which is approximately 65% lower than the Georgia average of 36. In Rockingham, 43% of the population over 15 years of age are married, 52% speak English and 48% speak Spanish. 93% of Rockingham residents were born in Georgia, 7% were born out of state, 0% were born outside of the United States and 0% were foreign born.