Cajamarca, also known by the Quechua name, Kashamarka, is the capital and largest city of the Cajamarca Region as well as an important cult…Cajamarca, also known by the Quechua name, Kashamarka, is the capital and largest city of the Cajamarca Region as well as an important cultural and commercial center in the northern Andes. It is located in the northern highlands of Peru at approximately 2,750 m above sea level in the valley of the Mashcon river. Cajamarca had an estimated population of about 226,031 inhabitants in 2015, making it the 13th largest city in Peru.