[1] The district capital is San Juan de Marcona a port on the Pacific coast.

In 1870, the Italian-born Peruvian geographer Antonio Raimnondi found the iron ore reserves.

The first explorations of the zone in terms of ores and minerals were started in 1915.

The capital of the district San Juan de Marcona is located in Ica Region, Nazca Province.

The exploitations of iron ore begun in 1953 in the bay of San Juan, in parts by the United States company Marcona Mining Company.