Peachtree City, GA has a population of 34,988 and is the 1,205th largest city in the United States. The population density is 1,426 per sq mi which is 754% higher than the Georgia average and 1473% higher than the national average. The median age in Peachtree City is 42 which is approximately 17% higher than the Georgia average of 36. In Peachtree City, 68% of the population over 15 years of age are married, 87% speak English and 7% speak Spanish. 31% of Peachtree City residents were born in Georgia, 56% were born out of state, 2% were born outside of the United States and 11% were foreign born.