McKinley Heights, OH has a population of 719 and is the 17,302nd largest city in the United States. The population density is 825 per sq mi which is 220% higher than the Ohio average and 811% higher than the national average. The median age in McKinley Heights is 48 which is approximately 22% higher than the Ohio average of 39. In McKinley Heights, 59% of the population over 15 years of age are married, 98% speak English and 0% speak Spanish. 84% of McKinley Heights residents were born in Ohio, 15% were born out of state, 0% were born outside of the United States and 2% were foreign born.