Litchfield, CT has a population of 1,329 and is the 13,425th largest city in the United States. The population density is 968 per sq mi which is 49% higher than the Connecticut average and 969% higher than the national average. The median age in Litchfield is 55 which is approximately 36% higher than the Connecticut average of 41. In Litchfield, 55% of the population over 15 years of age are married, 97% speak English and 2% speak Spanish. 55% of Litchfield residents were born in Connecticut, 40% were born out of state, 1% were born outside of the United States and 5% were foreign born.