Presque Isle Harbor, MI has a population of 629 and is the 18,138th largest city in the United States. The population density is 101 per sq mi which is equal to the Michigan average and 11% higher than the national average. The median age in Presque Isle Harbor is 61 which is approximately 55% higher than the Michigan average of 40. In Presque Isle Harbor, 82% of the population over 15 years of age are married, 98% speak English and 1% speak Spanish. 77% of Presque Isle Harbor residents were born in Michigan, 21% were born out of state, 0% were born outside of the United States and 1% were foreign born.