New Britain, CT has a population of 72,876 and is the 494th largest city in the United States. The population density is 5,457 per sq mi which is 742% higher than the Connecticut average and 5923% higher than the national average. The median age in New Britain is 34 which is approximately 16% lower than the Connecticut average of 41. In New Britain, 41% of the population over 15 years of age are married, 49% speak English and 32% speak Spanish. 52% of New Britain residents were born in Connecticut, 15% were born out of state, 14% were born outside of the United States and 19% were foreign born.