Newington, CT has a population of 30,590 and is the 1,390th largest city in the United States. The population density is 2,328 per sq mi which is 259% higher than the Connecticut average and 2469% higher than the national average. The median age in Newington is 45 which is approximately 10% higher than the Connecticut average of 41. In Newington, 59% of the population over 15 years of age are married, 72% speak English and 7% speak Spanish. 62% of Newington residents were born in Connecticut, 17% were born out of state, 3% were born outside of the United States and 19% were foreign born.