The Region of Cajamarca is situated in the North of the Peruvian territory, in the Occidental Andean Mountain Range. It covers mountainous and jungle areas, and has a surface of 35,417 square kilometers.
- To the North, with Ecuador
- To the South, with the Region of La Libertad
- To the East, with the Region of Amazonas
- To the West, with the regions of Piura and Lambayeque.
The city of Cajamarca is located at an altitude of 2,750 m.a.s.l. Towards the East, it presents a broad valley, through which run the Mashcón and Chonta rivers which, uniting at the level of the hamlet of Huayrapongo, form the Cajamarca River.