Kittery, ME has a population of 4,704 and is the 6,732nd largest city in the United States. The population density is 1,686 per sq mi which is 4388% higher than the Maine average and 1761% higher than the national average. The median age in Kittery is 38 which is approximately 13% lower than the Maine average of 44. In Kittery, 60% of the population over 15 years of age are married, 94% speak English and 3% speak Spanish. 17% of Kittery residents were born in Maine, 78% were born out of state, 1% were born outside of the United States and 4% were foreign born.