Hanover, NH has a population of 8,482 and is the 4,473rd largest city in the United States. The population density is 1,876 per sq mi which is 1228% higher than the New Hampshire average and 1970% higher than the national average. The median age in Hanover is 22 which is approximately 48% lower than the New Hampshire average of 42. In Hanover, 29% of the population over 15 years of age are married, 84% speak English and 2% speak Spanish. 12% of Hanover residents were born in New Hampshire, 72% were born out of state, 1% were born outside of the United States and 15% were foreign born.