Port Gibson, NY has a population of 473 and is the 19,864th largest city in the United States. The population density is 404 per sq mi which is 13% higher than the New York average and 346% higher than the national average. The median age in Port Gibson is 31 which is approximately 18% lower than the New York average of 38. In Port Gibson, 43% of the population over 15 years of age are married, 100% speak English and 0% speak Spanish. 92% of Port Gibson residents were born in New York, 8% were born out of state, 0% were born outside of the United States and 0% were foreign born.