J. McCormack Farm was a historic farm near Wilmington, New Castle County, Delaware. The property included four contributing buildings. They were a stone house, a stone and frame bank barn, a storage building, and a corn crib. The house was a two-story, gable-roofed, stuccoed stone structure with a two-story rear wing. The barn walls were of semi-coursed fieldstone finished with a pebbled stucco.