Morton Homestead is a historic homestead that is part of Morton Homestead State Park at 100 Lincoln Avenue in Prospect Park, Delaware County, Pennsylvania. The homestead was founded in 1654 by Morton Mortenson, a Finnish immigrant, when the area was part of the New Sweden colony. Mortenson's great-grandson, John Morton, signed the Declaration of Independence in 1776. Parts of the current house date back to the 1698 with a large addition constructed in the 18th century. The site was added to the National Register of Historic Places in 1970.