Alpharetta, GA has a population of 63,013 and is the 598th largest city in the United States. The population density is 2,343 per sq mi which is 1303% higher than the Georgia average and 2486% higher than the national average. The median age in Alpharetta is 37 which is approximately 3% higher than the Georgia average of 36. In Alpharetta, 63% of the population over 15 years of age are married, 74% speak English and 7% speak Spanish. 30% of Alpharetta residents were born in Georgia, 45% were born out of state, 2% were born outside of the United States and 23% were foreign born.