[1] The district of Paiján is one of the eight districts of the province of Ascope, located in the Department of La Libertad, under the administration of the regional government of La Libertad, in the northern part of Peru.

From the hierarchical point of view of the Catholic Church it is part of the Archdiocese of Trujillo.

According to information from the INEI (National Institute of Statistics and Informatics) It has a population of 25, 584 inhabitants.

[2] Paiján, a town that was previously called "Paycaem" (according to the Yunga language: a place of water and trees) was founded by the Corregidor Don Diego de Mora and called it "Villa el Salvador de Paiján".

The district was created during the government of President Eduardo Lopez of Romagna, by law of November 10, 1900, the same that gave to its capital the title of Villa and in the Law n º 9689 of December 12, 1942 it elevated it to category of city.