San Mateo District is one of thirty-two districts of the Huarochirí Province, located in the Department of Lima in Peru. It was one of eleven districts that formed the Huarochirí Province after it was created by decree on August 4, 1821, during the Protectorate of San Martín.

Geography

The La Viuda and the Paryaqaqa or Waruchiri mountain ranges traverse the district. Some of the highest mountains of the district are listed below: • Allqa Allqa • Chinchiqucha • Chunta • Kunkus Yantaq • Llipina • Mankan • Ñuñu • Paqcha • Pachanqutu • Paka • Qullqayuq • Quri • Sarayuq • Shiraq • Suyruqucha • Tata Qayqu • Uqhu • Uqsha Wallqa • Utush Mikhunan • Wamanripa • Waskha • Yana Qaqa • Yana Yana • Yuraq Anka (Junín-Lima) • Yuraq Anka (Lima) • Yawriq