Mack, OH has a population of 11,495 and is the 3,538th largest city in the United States. The population density is 1,239 per sq mi which is 381% higher than the Ohio average and 1268% higher than the national average. The median age in Mack is 45 which is approximately 14% higher than the Ohio average of 39. In Mack, 69% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 87% of Mack residents were born in Ohio, 10% were born out of state, 0% were born outside of the United States and 2% were foreign born.