Dallas, GA has a population of 12,622 and is the 3,286th largest city in the United States. The population density is 1,710 per sq mi which is 924% higher than the Georgia average and 1788% higher than the national average. The median age in Dallas is 33 which is approximately 10% lower than the Georgia average of 36. In Dallas, 54% of the population over 15 years of age are married, 90% speak English and 4% speak Spanish. 50% of Dallas residents were born in Georgia, 40% were born out of state, 3% were born outside of the United States and 7% were foreign born.