Hartford, CT has a population of 124,320 and is the 224th largest city in the United States. The population density is 7,153 per sq mi which is 1004% higher than the Connecticut average and 7795% higher than the national average. The median age in Hartford is 31 which is approximately 25% lower than the Connecticut average of 41. In Hartford, 30% of the population over 15 years of age are married, 55% speak English and 36% speak Spanish. 46% of Hartford residents were born in Connecticut, 18% were born out of state, 15% were born outside of the United States and 21% were foreign born.