Hanover, IN has a population of 3,525 and is the 8,015th largest city in the United States. The population density is 1,527 per sq mi which is 751% higher than the Indiana average and 1586% higher than the national average. The median age in Hanover is 25 which is approximately 33% lower than the Indiana average of 37. In Hanover, 39% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 68% of Hanover residents were born in Indiana, 29% were born out of state, 0% were born outside of the United States and 3% were foreign born.