New Milford, CT has a population of 7,080 and is the 5,139th largest city in the United States. The population density is 2,092 per sq mi which is 223% higher than the Connecticut average and 2209% higher than the national average. The median age in New Milford is 41 which is approximately equal to the Connecticut average of 41. In New Milford, 49% of the population over 15 years of age are married, 83% speak English and 11% speak Spanish. 48% of New Milford residents were born in Connecticut, 39% were born out of state, 0% were born outside of the United States and 13% were foreign born.