Hampden, ME has a population of 3,727 and is the 7,770th largest city in the United States. The population density is 340 per sq mi which is 805% higher than the Maine average and 275% higher than the national average. The median age in Hampden is 45 which is approximately 2% higher than the Maine average of 44. In Hampden, 63% of the population over 15 years of age are married, 97% speak English and 1% speak Spanish. 74% of Hampden residents were born in Maine, 22% were born out of state, 1% were born outside of the United States and 3% were foreign born.