New Milford, PA has a population of 966 and is the 15,378th largest city in the United States. The population density is 951 per sq mi which is 243% higher than the Pennsylvania average and 950% higher than the national average. The median age in New Milford is 37 which is approximately 10% lower than the Pennsylvania average of 41. In New Milford, 57% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 43% of New Milford residents were born in Pennsylvania, 55% were born out of state, 0% were born outside of the United States and 1% were foreign born.