Clinton, CT has a population of 3,605 and is the 7,913th largest city in the United States. The population density is 1,497 per sq mi which is 131% higher than the Connecticut average and 1552% higher than the national average. The median age in Clinton is 46 which is approximately 14% higher than the Connecticut average of 41. In Clinton, 57% of the population over 15 years of age are married, 93% speak English and 4% speak Spanish. 64% of Clinton residents were born in Connecticut, 30% were born out of state, 1% were born outside of the United States and 5% were foreign born.