Harrisville, NY has a population of 620 and is the 18,239th largest city in the United States. The population density is 789 per sq mi which is 120% higher than the New York average and 771% higher than the national average. The median age in Harrisville is 41 which is approximately 8% higher than the New York average of 38. In Harrisville, 57% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 82% of Harrisville residents were born in New York, 18% were born out of state, 0% were born outside of the United States and 0% were foreign born.