New Beaver is a borough in southern Lawrence County, Pennsylvania, United States. The population was 1,370 at the 2020 census. It is part of the Pittsburgh metropolitan area. Big Beaver Township was established as one of the thirteen townships in Lawrence County. Initially, Big Beaver Township included what is now the borough of Wampum. Wampum …New Beaver is a borough in southern Lawrence County, Pennsylvania, United States. The population was 1,370 at the 2020 census. It is part of the Pittsburgh metropolitan area. Big Beaver Township was established as one of the thirteen townships in Lawrence County. Initially, Big Beaver Township included what is now the borough of Wampum. Wampum became a separate borough on February 19, 1876, the same year that the Wampum Cement and Lime Company began. It is worth noting that the cement plant was located outside the borough of Wampum in what remained as Big Beaver Township.