Shenango Township, Lawrence County, Pennsylvania  Shenango Township is a township in Lawrence County, Pennsylvania, United States. The population was 7,479 at the 2010 census. Shenango Township is situated between the city of New Castle to the north and the borough of Ellwood City to the south. According to the United States Census Bureau, the township has a total area of 24.4 square miles (63.3 km²), of which 24.4 square miles (63.2 km²) is land and 0.04% is water. Adjacent townships and boroughs  Named for the Shenango River, Shenango Township was incorporated in 1796 as a part of Beaver County, Pennsylvania; Lawrence County did not yet exist. Shenango later became one of Lawrence County's original townships and quickly became one of the most populous areas, because the land was suitable for many different purposes. One of the first settlers to live in Shenango was William Carins. He came to this area in 1796 and was the man who gave Shenango its name. Carins was awarded the land after his service in the Revolutionary War; he was paid in of land. Carins worked as a cloth weaver and ran a small store where he sold his goods. William Tindall was another one of Shenango's first settlers. Tindall was paid for his service in the Revolutionary War. He lived to the age of 93 and was buried in the Tindall family cemetery near the "Turkey Hill" section of the township. The Tindall family cemetery is most famously known as the resting place of Mary Black, a supposed, but never proven, witch of around the same time period. Her grave is separate from the others and is the only one dug up. Shenango's largest land owner was a Philadelphia lawyer named Benjamin Chew. Chew bought up large portions of the southern extent of the township under assumed names for pennies an acre. He later resold the land for a profit, and the small town of Chewton was later named after him. The township was linked to New Castle, Ellwood and Pittsburgh in 1908 by the Pittsburgh, Harmony, Butler and New Castle Railway, an interurban trolley line. The line closed on 15 June 1931, and the trolleys were replaced by buses. The New Castle Armory was listed on the National Register of Historic Places in 1991. As of the census of 2000, there were 7,633 people, 2,854 households, and 2,171 families residing in the township.