Biddeford is a city located in York County, Maine, in the United States. Serving as the principal commercial center of the county, it had a recorded population of 22,552 during the 2020 census. The city is part of a twin-city arrangement with Saco, which together includes the resort communities of Biddeford Pool and Fortunes Rocks.
The area holds significant historical and cultural importance as one of the earliest European settlements in the United States, first visited by Europeans in 1616. Notable landmarks and institutions within the city include Saint Joseph's Church, which is the tallest building in Maine, and the University of New England. The city also hosts the annual La Kermesse Franco-Americaine Festival.