McKinley Heights, OH has a population of 906 and is the 15,792nd largest city in the United States. The population density is 1,040 per sq mi which is 268% higher than the Ohio average and 1048% higher than the national average. The median age in McKinley Heights is 51 which is approximately 31% higher than the Ohio average of 39. In McKinley Heights, 66% of the population over 15 years of age are married, 97% speak English and 0% speak Spanish. 91% of McKinley Heights residents were born in Ohio, 6% were born out of state, 0% were born outside of the United States and 3% were foreign born.