Marcellus, NY has a population of 1,703 and is the 11,967th largest city in the United States. The population density is 2,739 per sq mi which is 663% higher than the New York average and 2923% higher than the national average. The median age in Marcellus is 48 which is approximately 25% higher than the New York average of 38. In Marcellus, 57% of the population over 15 years of age are married, 96% speak English and 0% speak Spanish. 81% of Marcellus residents were born in New York, 15% were born out of state, 0% were born outside of the United States and 3% were foreign born.