Consecrated in 1887, Mt. St. Peter Cemetery is located on 75 acres of park-like property overlooking the scenic Housatonic River in the Naugatuck Valley. Mt St Peter Cemetery offers a wide variety of in-ground burial options, Mausoleum Entombment in one of our three community mausoleums, cremation graves, niches and outdoor columbaria. Private Family Estates give a sense of privacy for the legacy of Derby’s historic Catholics.