Peachtree Corners, GA has a population of 41,268 and is the 997th largest city in the United States. The population density is 2,563 per sq mi which is 1435% higher than the Georgia average and 2728% higher than the national average. The median age in Peachtree Corners is 36 which is approximately equal to the Georgia average of 36. In Peachtree Corners, 55% of the population over 15 years of age are married, 74% speak English and 13% speak Spanish. 34% of Peachtree Corners residents were born in Georgia, 45% were born out of state, 1% were born outside of the United States and 20% were foreign born.