Plandome Heights, NY has a population of 983 and is the 15,273rd largest city in the United States. The population density is 5,435 per sq mi which is 1415% higher than the New York average and 5898% higher than the national average. The median age in Plandome Heights is 44 which is approximately 15% higher than the New York average of 38. In Plandome Heights, 69% of the population over 15 years of age are married, 78% speak English and 4% speak Spanish. 76% of Plandome Heights residents were born in New York, 6% were born out of state, 2% were born outside of the United States and 16% were foreign born.