Jewett City, CT has a population of 3,451 and is the 8,116th largest city in the United States. The population density is 4,897 per sq mi which is 656% higher than the Connecticut average and 5305% higher than the national average. The median age in Jewett City is 30 which is approximately 27% lower than the Connecticut average of 41. In Jewett City, 43% of the population over 15 years of age are married, 82% speak English and 7% speak Spanish. 66% of Jewett City residents were born in Connecticut, 23% were born out of state, 1% were born outside of the United States and 10% were foreign born.