Wilton Center, CT has a population of 675 and is the 17,686th largest city in the United States. The population density is 2,448 per sq mi which is 278% higher than the Connecticut average and 2602% higher than the national average. The median age in Wilton Center is 43 which is approximately 7% higher than the Connecticut average of 41. In Wilton Center, 34% of the population over 15 years of age are married, 77% speak English and 4% speak Spanish. 31% of Wilton Center residents were born in Connecticut, 51% were born out of state, 0% were born outside of the United States and 17% were foreign born.