Hanover, OH has a population of 1,262 and is the 13,723rd largest city in the United States. The population density is 768 per sq mi which is 198% higher than the Ohio average and 747% higher than the national average. The median age in Hanover is 31 which is approximately 21% lower than the Ohio average of 39. In Hanover, 60% of the population over 15 years of age are married, 99% speak English and 0% speak Spanish. 89% of Hanover residents were born in Ohio, 10% were born out of state, 1% were born outside of the United States and 0% were foreign born.