Kennebunkport is a town in York County, Maine, United States. The population was 3,720 at the 2000 census. It is part of the Portland–South Portland–Biddeford Metropolitan Statistical Area. The town center located along the Kennebunk River, approximately 1 mile (1.6 km) from the mouth of the river on the ocean. Historically a shipbuilding and fishing village, for well over a century the town has been a popular seaside tourist destination. Kennebunkport has a small district of souvenir shops, art galleries, seafood restaurants, and bed and breakfasts. Its reputation as an upscale community comes from the numerous large seaside estates along Ocean Avenue and other coastal thoroughfares. In the summer months, many wealthy people from across the Northeast vacation in Kennebunkport and nearby Goose Rocks Beach. It is regarded as one of the most expensive vacation areas in the Northeast. During the fall, Kennebunkport is a frequent stop for tour buses showing visitors the famous New England fall colors. Kennebunkport and neighboring towns Kennebunk and Arundel comprise RSU 21.