Middleburg Heights, OH has a population of 15,724 and is the 2,727th largest city in the United States. The population density is 1,950 per sq mi which is 657% higher than the Ohio average and 2052% higher than the national average. The median age in Middleburg Heights is 46 which is approximately 18% higher than the Ohio average of 39. In Middleburg Heights, 61% of the population over 15 years of age are married, 80% speak English and 4% speak Spanish. 73% of Middleburg Heights residents were born in Ohio, 11% were born out of state, 2% were born outside of the United States and 14% were foreign born.