San Pietro in Cerro (Piacentino: San Pédar) is a comune (municipality) in the Province of Piacenza in the Italian region Emilia-Romagna, located about 120 kilometres (75 mi) northwest of Bologna and about 20 kilometres (12 mi) east of Piacenza. As of 31 December 2004, it had a population of 962 and an area of 27.5 square kilometres (10.6 sq mi).[3]