Moosup, CT has a population of 3,558 and is the 7,968th largest city in the United States. The population density is 1,541 per sq mi which is 138% higher than the Connecticut average and 1601% higher than the national average. The median age in Moosup is 41 which is approximately 1% higher than the Connecticut average of 41. In Moosup, 51% of the population over 15 years of age are married, 86% speak English and 7% speak Spanish. 54% of Moosup residents were born in Connecticut, 36% were born out of state, 1% were born outside of the United States and 9% were foreign born.