West Haven, CT has a population of 54,972 and is the 727th largest city in the United States. The population density is 5,115 per sq mi which is 690% higher than the Connecticut average and 5546% higher than the national average. The median age in West Haven is 36 which is approximately 11% lower than the Connecticut average of 41. In West Haven, 42% of the population over 15 years of age are married, 74% speak English and 16% speak Spanish. 60% of West Haven residents were born in Connecticut, 20% were born out of state, 3% were born outside of the United States and 17% were foreign born.