Glastonbury Center, CT has a population of 7,523 and is the 4,927th largest city in the United States. The population density is 1,583 per sq mi which is 144% higher than the Connecticut average and 1647% higher than the national average. The median age in Glastonbury Center is 45 which is approximately 10% higher than the Connecticut average of 41. In Glastonbury Center, 58% of the population over 15 years of age are married, 88% speak English and 4% speak Spanish. 59% of Glastonbury Center residents were born in Connecticut, 31% were born out of state, 1% were born outside of the United States and 8% were foreign born.