Juliaca is the capital of San Román Province in the Puno Region of southeastern Peru. It is the region's largest city with a population of 276,110 inhabitants (2017). On the Altiplano, Juliaca is 3,825 metres (12,549 ft) above sea level, is located on the Collao Plateau and is northwest of Lake Titicaca (45 km). It is the largest trade center in the Puno region.

Puno is a department and region in southeastern Peru. It is the fifth largest department in Peru, after Cuzco, Madre de Dios, Ucayali, and Loreto. It is bordered by Bolivia on the east, the departments of Madre de Dios on the north, Cusco and Arequipa on the west, Moquegua on the southwest, and Tacna on the south. Its capital is the city of Puno, which is located on Lake Titicaca in the geographical region known as the Altiplano or high sierra.