Weedville is an unincorporated community and census-designated place in Jay Township, Elk County, Pennsylvania, United States. As of the 2020 census, the population was 565. Weedville is located in the southern part of Jay Township, in southeastern Elk County, in the valley of the Bennett Branch Sinnemahoning Creek, a tributary of the West Branch Susquehanna River. It is bordered to the northwest by Byrnedale and to the southwest by Force.