Salmon Brook, CT has a population of 2,568 and is the 9,681st largest city in the United States. The population density is 856 per sq mi which is 32% higher than the Connecticut average and 845% higher than the national average. The median age in Salmon Brook is 47 which is approximately 16% higher than the Connecticut average of 41. In Salmon Brook, 65% of the population over 15 years of age are married, 92% speak English and 1% speak Spanish. 59% of Salmon Brook residents were born in Connecticut, 35% were born out of state, 1% were born outside of the United States and 6% were foreign born.