Cape Vincent, NY has a population of 722 and is the 17,275th largest city in the United States. The population density is 1,027 per sq mi which is 186% higher than the New York average and 1033% higher than the national average. The median age in Cape Vincent is 43 which is approximately 13% higher than the New York average of 38. In Cape Vincent, 71% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 70% of Cape Vincent residents were born in New York, 23% were born out of state, 3% were born outside of the United States and 5% were foreign born.