Willow Street is a census-designated place in Lancaster County, Pennsylvania, United States. The population was 7,258 at the 2000 census. In the early part of the 20th century the main thoroughfare in town was lined with Willow trees on both sides for the length of the town. The community received its name because of these trees. As time marched on the town grew. The road was widened, sidewalks were installed which required the trees be removed. Only a few of the original trees remain to this day. Willow Street apartments for rent comparison page shows most up to date rent information on Willow Street apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.