Norwalk, CT has a population of 87,930 and is the 372nd largest city in the United States. The population density is 3,842 per sq mi which is 493% higher than the Connecticut average and 4141% higher than the national average. The median age in Norwalk is 39 which is approximately 3% lower than the Connecticut average of 41. In Norwalk, 53% of the population over 15 years of age are married, 62% speak English and 23% speak Spanish. 44% of Norwalk residents were born in Connecticut, 27% were born out of state, 2% were born outside of the United States and 27% were foreign born.