Troy, NY has a population of 49,881 and is the 819th largest city in the United States. The population density is 4,816 per sq mi which is 1242% higher than the New York average and 5216% higher than the national average. The median age in Troy is 31 which is approximately 20% lower than the New York average of 38. In Troy, 35% of the population over 15 years of age are married, 87% speak English and 5% speak Spanish. 75% of Troy residents were born in New York, 17% were born out of state, 1% were born outside of the United States and 7% were foreign born.