. "Piippola is a former municipality of Finland.Piippola is located in the province of Oulu and is part of the Northern Ostrobothnia region. The municipality had a population of 1,251 (31 December 2008) and covered an area of 464.98 km2 (179.53 sq mi) of which 9.28 km2 (3.58 sq mi) is water."@en . .