Upon crossing the Smyrna River, DE 9 enters New Castle County and becomes Flemings Landing Road, heading through the community of Flemings Landing and passing through agricultural areas with some woods to the west of the Cedar Swamp Wildlife Area. The road runs to the north before curving northwest again. The route turns west onto Taylors Bridge Road and crosses the marshy Blackbird Creek. DE 9 curves to the north-northwest and passes through more rural areas with some residential subdivisions to the west. The route heads to the northwest before turning northeast onto Thomas Landing Road in Mathews Corners, with DE 299 continuing northwest on Taylors Bridge Road towards Odessa, where the Odessa Historic District is located.